Percentage Calculator

How to Calculate a Percentage

Calculating a percentage is simple when you know the basic formula. To find a percentage of a number, divide the percentage by 100 and multiply the result by the number.

You can also use our Free Online Calculators to calculate EMI, FD returns, recurring deposits, salary, age, and other useful calculations.

Formula:

Percentage of a number = (Percentage ÷ 100) × Number

For example, if you want to find 20% of 500:

20 ÷ 100 × 500 = 100

So, 20% of 500 is 100.

You can use the Percentage Calculator above to get the result quickly without doing the calculation manually.

Common Percentage Calculations

1. What is X% of Y?

This is one of the most common percentage calculations. For example, to find 15% of 800:

15 ÷ 100 × 800 = 120

So, 15% of 800 is 120.

2. What Percentage is X of Y?

To find what percentage one number is of another, use this formula:

Percentage = (Part ÷ Total) × 100

For example, if you scored 75 marks out of 100:

75 ÷ 100 × 100 = 75%

So, your score is 75%.

3. Percentage Increase or Decrease

To calculate the percentage increase or decrease between two values, use this formula:

Percentage Change = ((New Value − Original Value) ÷ Original Value) × 100

For example, if a product’s price increases from ₹500 to ₹600:

((600 − 500) ÷ 500) × 100 = 20%

So, the price increased by 20%.

1. What is X% of Y?

This is one of the most common percentage calculations. For example, to find 15% of 800:

15 ÷ 100 × 800 = 120

So, 15% of 800 is 120.

2. What Percentage is X of Y?

To find what percentage one number is of another, use this formula:

Percentage = (Part ÷ Total) × 100

For example, if you scored 75 marks out of 100:

75 ÷ 100 × 100 = 75%

So, your score is 75%.

3. Percentage Increase or Decrease

To calculate the percentage increase or decrease between two values, use this formula:

Percentage Change = ((New Value − Original Value) ÷ Original Value) × 100

For example, if a product’s price increases from ₹500 to ₹600:

((600 − 500) ÷ 500) × 100 = 20%

So, the price increased by 20%.

Where Can You Use a Percentage Calculator?

A percentage calculator can be useful in many everyday situations. Students can use it to calculate marks and exam percentages, while shoppers can use it to understand discounts and price changes. Employees may use percentages to calculate salary increases or deductions, and business owners can use them to work out profit margins, sales changes, and other basic calculations.

For example, if a shirt costs ₹2,000 and a store offers a 25% discount, you can quickly calculate the discount amount and the final price using percentage calculations.

Using an online calculator can save time and reduce mistakes when you need a quick percentage result.

A percentage is a way of expressing a number as a fraction of 100. You can learn more about the basic concept of percentage from Britannica.

Percentage Calculator Examples

Here are some simple percentage examples to help you understand how percentage calculations work.

Example 1: Finding a percentage of a number

What is 10% of 750?

10 ÷ 100 × 750 = 75

So, 10% of 750 is 75.

Example 2: Finding a percentage from marks

If a student scores 420 marks out of 500:

(420 ÷ 500) × 100 = 84%

The student’s percentage is 84%.

Example 3: Calculating a discount

Suppose a product costs ₹1,500 and has a 20% discount.

20% of ₹1,500 = ₹300

Final price = ₹1,500 − ₹300 = ₹1,200.

These examples show how percentages can be used for marks, shopping discounts, and everyday calculations.

Frequently Asked Questions About Percentages

What is the easiest way to calculate a percentage?

The easiest way is to use the formula (Percentage ÷ 100) × Number. You can also use the calculator above to get the result quickly.

How do I calculate 20% of a number?

Divide 20 by 100 and multiply it by the number. For example, 20% of 500 is 100.

How do I calculate what percentage one number is of another?

Divide the first number by the total number and multiply the result by 100. For example, 50 out of 200 is 25%.

Can I use a percentage calculator for discounts?

Yes. You can calculate the discount amount by finding the discount percentage of the original price and then subtracting that amount from the original price.

Is this Percentage Calculator free to use?

Yes. The Percentage Calculator on this page is free to use and does not require registration.