Percentage Calculator

Our Percentage Calculator helps you quickly calculate percentages, percent changes, increases, and decreases in seconds. Whether you need to find what is X% of Y, determine X is what percent of Y, or calculate percentage increase or decrease, this tool gives instant and accurate results.

This all-in-one percent calculator is designed for everyday use — from calculating discounts and sales tax to solving math problems and tracking financial growth. Instead of memorizing complex formulas, you can simply enter your values and let the calculator do the work.

You can use this percentage change calculator to:

• Calculate a percentage of a number
• Find what percent one number is of another
• Compute percent increase or percent decrease
• Measure percentage difference between two values

Percentages are widely used in finance, shopping, statistics, school math, business analysis, and data comparison. With this calculator, you can solve percentage problems quickly, accurately, and without confusion.

Whether you’re a student, business owner, or just trying to calculate a discount, this tool makes percentage calculations fast and simple.

Use This Percentage Calculator to Solve

This percentage calculator is designed to handle the most common percent calculations people search for every day. Instead of manually applying formulas, you can instantly solve these problems with accurate results.

You can use this tool to calculate:

What Is X% of Y?

Find a percentage of a number quickly.

Examples:

• What is 20% of 100?
• What is 15% of 80?
• What is 10% of 250?

This is commonly used for discounts, tax calculations, tips, commissions, and markups.

X Is What Percent of Y?

Determine what percentage one number represents of another.

Examples:

• 2 is what percent of 12?
• 30 is what percent of 150?
• 45 is what percent of 60?

This is helpful for calculating grades, ratios, performance comparisons, and statistical analysis.

Percentage Change (Increase or Decrease)

Calculate how much a value has increased or decreased in percentage terms.

Examples:

• Price increased from $50 to $65
• Revenue decreased from $1,000 to $850
• Traffic grew from 5,000 to 7,500 visitors

This function is widely used in finance, investing, business growth tracking, and data analysis.

No matter which type of percentage problem you need to solve, this percent calculator provides fast, accurate, and easy-to-understand results.

What Is X% of Y? (Percent of a Number)

One of the most common percentage calculations is finding what is X% of Y. This simply means calculating a percentage of a number.

Percentage Formula

To calculate X% of Y, use this formula:

$$(X ÷ 100) × Y$$

Or more simply:

$$X$$

Examples

What is 20% of 100?
(20 ÷ 100) × 100 = 20

What is 15% of 80?
(15 ÷ 100) × 80 = 12

What is 10% of 250?
(10 ÷ 100) × 250 = 25

When Is This Used?

Finding a percent of a number is useful for:

• Calculating discounts (20% off $50)
• Adding sales tax (8% of $200)
• Calculating tips (15% tip on $80)
• Finding commission rates
• Determining interest amounts

Instead of manually applying the formula each time, you can use this percentage calculator to instantly find what any percent of a number equals. Simply enter the percentage and the value, and the tool will do the calculation for you.

X Is What Percent of Y?

Another common percentage calculation is determining X is what percent of Y. This means finding what percentage one number represents compared to another.

This type of calculation is often used in grades, financial comparisons, statistics, and performance analysis.

Percentage Formula

To find what percent X is of Y, use this formula:

$$(X ÷ Y) × 100$$

This converts the fraction into a percentage.

Examples

2 is what percent of 12?
(2 ÷ 12) × 100 = 16.67%

30 is what percent of 150?
(30 ÷ 150) × 100 = 20%

45 is what percent of 60?
(45 ÷ 60) × 100 = 75%

When Is This Used?

This calculation is helpful when you need to:

• Calculate test scores and grade percentages
• Compare two values
• Measure performance growth
• Analyze financial ratios
• Determine completion percentages

Instead of manually dividing and multiplying by 100, you can use this percentage calculator to quickly find what percent one number is of another with accurate results.

Percentage Change Calculator (Increase & Decrease)

The percentage change calculator helps you measure how much a value has increased or decreased over time. This is one of the most searched percentage calculations and is widely used in finance, business, investing, and data analysis.

Percentage change shows the difference between an old value and a new value, expressed as a percentage.

Percentage Change Formula

$$\frac{New\ Value – Old\ Value}{Old\ Value} \times 100$$

If the result is positive, it represents a percentage increase.
If the result is negative, it represents a percentage decrease.

Percentage Increase Example

If a price increases from 50 to 65:

$$(65 – 50) ÷ 50 × 100 = 30\%$$

The value increased by 30%.

Percentage Decrease Example

If revenue drops from 1,000 to 850:

$$(850 – 1,000) ÷ 1,000 × 100 = -15\%$$

The value decreased by 15%.

When to Use Percentage Change

You can use percentage change calculations to:

• Measure price increases or decreases
• Track revenue growth
• Compare yearly sales performance
• Analyze stock price changes
• Monitor population growth
• Evaluate business performance

Instead of manually applying the percent change formula, this percentage change calculator allows you to instantly calculate percentage increase or percentage decrease between two numbers accurately and efficiently.

Percentage Increase Formula

The percentage increase formula is used to calculate how much a value has grown compared to its original amount. It shows the increase as a percentage of the starting value.

Percentage Increase Formula

$$\frac{New\ Value – Original\ Value}{Original\ Value} \times 100$$

This formula works whenever the new value is greater than the original value.

Example 1

If a product price increases from 80 to 100:

$$(100 – 80) ÷ 80 × 100 = 25\%$$

The price increased by 25%.

Example 2

If website traffic grows from 5,000 to 6,500 visitors:

$$(6,500 – 5,000) ÷ 5,000 × 100 = 30\%$$

Traffic increased by 30%.

When to Use Percentage Increase

You can use the percentage increase calculation to:

• Measure sales growth
• Track investment returns
• Calculate salary raises
• Analyze business expansion
• Compare yearly performance

Instead of manually applying the formula, you can use the percentage increase calculator to quickly determine how much a value has increased in percentage terms.

Percentage Decrease Formula

The percentage decrease formula is used to calculate how much a value has reduced compared to its original amount. It expresses the decrease as a percentage of the starting value.

Percentage Decrease Formula

$$\frac{Original\ Value – New\ Value}{Original\ Value} \times 100$$

This formula applies when the new value is smaller than the original value.

Example 1

If the price of a product drops from 120 to 90:

$$(120 – 90) ÷ 120 × 100 = 25\%$$

The price decreased by 25%.

Example 2

If company revenue declines from 50,000 to 42,500:

$$(50,000 – 42,500) ÷ 50,000 × 100 = 15\%$$

Revenue decreased by 15%.

When to Use Percentage Decrease

You can use the percentage decrease calculation to:

• Measure price reductions
• Track revenue losses
• Analyze cost savings
• Monitor performance decline
• Evaluate market downturns

Instead of calculating manually, the percentage decrease calculator allows you to instantly determine how much a value has decreased in percentage terms with accuracy and ease.

Real-Life Percentage Examples

Percentages are used in everyday situations, from shopping and taxes to grades and business calculations. Below are common real-world percentage examples that show how percentage calculations work in practice.

Discount Calculation

If a product costs 100 and is offered at a 20% discount:

$$20\% \times 100 = 20$$

Final price:

$$100 – 20 = 80$$

The customer saves 20.

Sales Tax Calculation

If the sales tax rate is 8% on a purchase of 250:

$$8\% \times 250 = 20$$

Total price:

$$250 + 20 = 270$$

Tip Percentage

If you leave a 15% tip on a bill of 80:

$$15\% \times 80 = 12$$

Total amount paid:

$$80 + 12 = 92$$

Grade Percentage

If a student scores 45 out of 60:

$$(45 ÷ 60) × 100 = 75\%$$

The student’s grade is 75%.

Markup Percentage

If a product costs 50 and is sold for 65:

$$(65 – 50) ÷ 50 × 100 = 30\%$$

The markup is 30%.

ROI Example

If you invest $80 in a product and later sell it for $100 than return on investment:

Profit:

Profit = $20

These examples show how percentages are applied in daily life. Whether you need to calculate a discount, tax, tip, grade, or markup, this percentage calculator helps you solve these problems quickly and accurately.

Popular Percentage Calculations

Below are some of the most searched percentage calculations. These examples help you quickly find answers to common percent problems and match real search queries people enter every day.

What is 10% of 100?

$$(10 ÷ 100) × 100 = 10$$

Answer: 10

What is 20% of 50?

$$(20 ÷ 100) × 50 = 10$$

Answer: 10

What is 15% of 200?

$$(15 ÷ 100) × 200 = 30$$

Answer: 30

2 is What Percent of 12?

$$(2 ÷ 12) × 100 = 16.67\%$$

Answer: 16.67%

5 is What Percent of 20?

$$(5 ÷ 20) × 100 = 25\%$$

Answer: 25%

30 is What Percent of 150?

$$(30 ÷ 150) × 100 = 20\%$$

Answer: 20%

What is the Percentage Increase from 50 to 75?

$$(75 – 50) ÷ 50 × 100 = 50\%$$

Answer: 50% increase

What is the Percentage Decrease from 80 to 60?

$$(80 – 60) ÷ 80 × 100 = 25\%$$

Answer: 25% decrease

These common percentage problems reflect high-volume search queries. If your specific calculation is not listed here, you can use the percentage calculator above to instantly compute any percent of a number, percent change, increase, or decrease.

Try These Calculators Next

• ROI Calculator
• Test Grade Calculator
• Proportion Calculator

Frequently Asked Questions (FAQs)

What is a percentage?

A percentage is a way of expressing a number as a fraction of 100. It represents a ratio between two numbers without units, making it easier to compare values on a common scale. Percentages are widely used in finance, statistics, business, education, and everyday calculations.

How do I calculate X percent of Y?

To calculate X% of Y, follow these steps:

1. Divide X by 100.
2. Multiply the result by Y.

Formula:$$(X ÷ 100) × Y$$

The final result is X percent of Y.

How much percent of Y is X?

To determine what percent X is of Y:

1. Divide X by Y.
2. Multiply the result by 100.

Formula:$$(X ÷ Y) × 100$$

The final result shows how much percent of Y is equal to X.

How much is 60% of 1260?

60% of 1260 equals 756.

Step-by-step calculation:

1. Divide 60 by 100
   60 ÷ 100 = 0.6
2. Multiply the result by 1260
   0.6 × 1260 = 756

So, 60 percent of 1260 is 756.