📊 Percentage Calculator

Easily solve percentage problems online: find out what is X% of Y, what percent X is of Y, or how much a number increases or decreases by a percentage.

What is a Percentage?

A percentage is a way to express a number as a fraction of 100. It's widely used for calculating discounts, interest, growth rates, and many other everyday math problems.

Percentage Formulas

Here are the most common percentage formulas:

• X% of Y: (X / 100) × Y
• X is what percent of Y: (X / Y) × 100
• Increase X by Y%: X + (X × Y / 100)