Percentage Calculator

Calculate percentages, increases, decreases, and differences.

By {{SITE_NAME}} Team • Free tool, no signup required • Works offline

What is X% of Y?

% of = ?

A is what % of B?

is what % of = ?

% change from A to B

= ?

Percentage Calculator for Quick Math

Percentage calculations are used daily in finance, shopping, academics, and business. Our calculator handles the most common percentage operations: finding a percentage of a number, calculating what percentage one number is of another, and computing percentage increases or decreases.

Common Percentage Calculations

Calculating discounts while shopping, determining tax amounts, figuring out grade percentages, computing profit margins, and analyzing data changes are all common uses for percentage calculations. Our tool provides instant results for all these scenarios.

Frequently Asked Questions

How do I calculate a discount?
Enter the original price and the discount percentage. The tool will show the discounted amount and the final price after the discount is applied.
What is the formula for percentage increase?
Percentage increase = ((New Value - Original Value) / Original Value) × 100. Our tool calculates this automatically when you enter both values.