Percentage Calculator

Quickly find percentages, percentage change, or what percent one number is of another — no sign-up needed.

How to Calculate a Percentage

To find X% of Y, multiply Y by X and divide by 100. For example, 20% of 150 = 150 × 20 / 100 = 30.

Frequently Asked Questions

What is a percentage?
A percentage is a fraction of 100. It expresses a ratio as parts per hundred.

How do I calculate percentage increase?
Subtract the original value from the new value, divide by the original, then multiply by 100.

What is 15% of 200?
15% of 200 = 200 × 15 / 100 = 30.