Calculate percentages quickly and accurately with our free online Percentage Calculator. Find a percentage of a number, compare values, calculate percentage changes, and solve common percentage problems in seconds.

About Percentage Calculator

Percentage calculations are used in everyday life for discounts, price changes, exam scores, business calculations, salary changes, statistics and many other situations. However, calculating percentages manually can sometimes be confusing.

RosePDF’s Percentage Calculator makes these calculations simple. Enter your numbers, choose the type of percentage calculation you need, and get the result instantly.

Whether you want to find what percentage one number is of another, calculate a percentage increase or decrease, or determine the percentage difference between two numbers, this calculator can help.

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What Can You Calculate?

Our Percentage Calculator can be used for several common percentage calculations:

1. Calculate X% of a Number

Find a specific percentage of any number.

Example:
What is 20% of 500?

Result:
100

Formula:
(20 ÷ 100) × 500 = 100

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2. Find What Percentage One Number Is of Another

Find out what percentage one value represents of another value.

Example:
100 is what percentage of 500?

Result:
20%

Formula:
(100 ÷ 500) × 100 = 20%

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3. Percentage Increase

Calculate how much a value has increased in percentage terms.

Example:
A price increases from ₹500 to ₹650.

Percentage Increase:
30%

Formula:

((New Value − Original Value) ÷ Original Value) × 100

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4. Percentage Decrease

Calculate how much a value has decreased as a percentage.

Example:
A price decreases from ₹650 to ₹500.

Percentage Decrease:
23.08%

Formula:

((Original Value − New Value) ÷ Original Value) × 100

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5. Increase a Number by a Percentage

Find the final value after increasing a number by a particular percentage.

Example:
Increase 500 by 20%.

Calculation:
500 + 20% of 500 = 600

Result:
600

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6. Decrease a Number by a Percentage

Find the final value after reducing a number by a specific percentage.

Example:
Decrease 500 by 20%.

Calculation:
500 − 20% of 500 = 400

Result:
400

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7. Percentage Difference

Calculate the percentage difference between two values.

This can be useful when comparing measurements, prices, scores, statistics or other numerical values.

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Percentage Formula

The basic percentage formula is:

Percentage = (Part ÷ Whole) × 100

For example, if you scored 45 marks out of 60:

(45 ÷ 60) × 100 = 75%

Therefore, your percentage is 75%.

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How to Calculate Percentage

You can calculate a percentage manually using these simple steps:

1. Identify the part and the whole value.
2. Divide the part by the whole.
3. Multiply the result by 100.
4. Add the percentage symbol %.

Example

Suppose you scored 72 marks out of 90.

72 ÷ 90 = 0.8

0.8 × 100 = 80%

So your percentage is 80%.

With RosePDF’s Percentage Calculator, you don’t need to perform these calculations manually. Simply enter the values and get the result instantly.

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Percentage Increase Formula

To calculate percentage increase:

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

Example

Original price = ₹800
New price = ₹1,000

Difference:

1000 − 800 = 200

Percentage increase:

(200 ÷ 800) × 100 = 25%

So the price increased by 25%.

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Percentage Decrease Formula

To calculate percentage decrease:

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

Example

Original price = ₹1,000
New price = ₹750

Difference:

1000 − 750 = 250

Percentage decrease:

(250 ÷ 1000) × 100 = 25%

So the price decreased by 25%.

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Where Is a Percentage Calculator Useful?

Percentage calculations are useful in many everyday situations.

Discounts

Calculate the amount saved during a sale.

Example:
20% discount on ₹2,000 = ₹400 discount.

Exam Marks

Calculate your exam percentage from marks obtained and total marks.

Salary Changes

Calculate percentage increases or decreases in salary.

Business

Compare sales, revenue, expenses and growth percentages.

Shopping

Calculate discounts, price changes and savings.

Finance

Understand percentage changes in prices, investments and other financial values.

Statistics

Calculate percentages when comparing numerical data.

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Why Use RosePDF Percentage Calculator?

Free to Use

Calculate percentages online without paying for the basic calculator.

Quick Results

Get your calculation results within seconds.

Multiple Percentage Calculations

Handle different types of percentage problems from one convenient tool.

Simple Interface

Enter your numbers and select the calculation you need without complicated steps.

Accurate Calculations

The calculator performs the mathematical calculation automatically to reduce manual calculation errors.

Works on Different Devices

Use the calculator on desktop computers, tablets and mobile phones.

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How to Use the Percentage Calculator

Using the RosePDF Percentage Calculator is simple:

Step 1: Open the Percentage Calculator.

Step 2: Select the type of percentage calculation you want to perform.

Step 3: Enter the required numbers.

Step 4: Click the calculate button.

Step 5: View your percentage result instantly.

You can change the numbers and perform another calculation whenever needed.

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Percentage Examples

Here are some common examples:

Calculation	Result
10% of 500	50
20% of 500	100
25% of 800	200
50% of 600	300
75% of 400	300
100 is what % of 500?	20%
500 increased by 10%	550
500 decreased by 10%	450