# Percentage Calculator

## Online Free Percentage Calculator

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### Percentage Calculators

• Online percentage calculator, with many common phrases to make the calculation more simple and easy.

Calculate percentage, increase and/or decrease percent, reverse percentage, the percentage change between two numbers, and the percentage converter.

### How to Calculate a Percentage of a number

• Divide the percentage number by 100, you will get the decimal number of the percentage, then multiply the decimal number by a number to get the percentage of the number.

Formula:
X percent of Y number
X% of Y = ( X / 100 ) x Y

Example:
5 percent of 80
5% of 80 = ( 5 / 100 ) x 80 = 4

### How to Calculate Percentage

• Divide the number with the total number, and multiplied by 100, to get the percentage of the number from the total number.

Formula:
X is what percent of Y
Percentage = ( X ÷ Y ) x 100

Example:
5 is what percent of 80
( 5 ÷ 80 ) x 100 = 6.25%