Percentage Calculator

Quickly calculate percentages, percentage changes, and more.

What is X% of Y?

What is% of?

X is what % of Y?

is what % of?

Percentage Change

Fromto

Increase / Decrease by %

by%

How to Calculate Percentages

A percentage is a fraction of 100. To find X% of Y, multiply Y by X/100. To find what percentage X is of Y, divide X by Y and multiply by 100. Percentage change is calculated as ((new - old) / |old|) x 100.