Percentage Calculator – Free Online Percentage Calculator

Percentage Calculator

Calculate percentages quickly and easily with our free online percentage calculator.

What is X% of Y?

Percentage (%)

Number

X is what percentage of Y?

First Number (X)

Second Number (Y)

Percentage Increase or Decrease

Original Value

New Value

What is a Percentage?

A percentage is a number or ratio expressed as a fraction of 100. Percentages are commonly used for discounts, increases, decreases, statistics, finance, business, education and everyday calculations.

How to Calculate a Percentage

Percentage Formula:
Percentage = (Part ÷ Whole) × 100

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

20 ÷ 100 × 500 = 100

Therefore, 20% of 500 is 100.

Percentage Calculator Examples

Example 1: Find 20% of 500

Enter 20 as the percentage and 500 as the number. The result is 100.

Example 2: 50 is what percentage of 200?

Use the formula:

(50 ÷ 200) × 100 = 25%

Therefore, 50 is 25% of 200.

Percentage Increase and Decrease

Percentage change is useful for comparing an original value with a new value.

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

A positive result means the value increased, while a negative result means the value decreased.

Frequently Asked Questions

What is a percentage calculator?

A percentage calculator is an online tool that helps you quickly calculate percentages, percentage values, increases and decreases.

How do I calculate 20% of a number?

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

How do I calculate percentage increase?

Subtract the original value from the new value, divide by the original value, then multiply by 100.

Is this percentage calculator free?

Yes. This online percentage calculator is free to use.