EVERYDAY CALCULATOR

Calculate percentages without a spreadsheet.

Find a percentage of a total, determine what percentage one number is of another, or measure percentage change.

PERCENTAGE CALCULATOR

Choose a calculation

Select the relationship, then enter two numbers separated by a space, comma or line break.

Two numbers

Second input

Calculation

CALCULATION GUIDE

“15% of 240” multiplies 240 by 0.15. The result is 36.

“36 is what percent of 240?” divides 36 by 240, then multiplies by 100.

Change uses the original value as the denominator. A fall from 200 to 150 is a 25% decrease.

Why can percentage change exceed 100%?

An increase can exceed the entire starting value. Moving from 50 to 125 is a 150% increase.

What happens when the starting value is zero?

Standard percentage change is undefined because it would require division by zero.