Percentage Calculator

Solve every everyday percentage question in one place — discounts, tips, grades, growth rates and more. Results update as you type.

What is % of ? —

is what % of ? —

Change from to ? —

plus / minus %? —

Percentage formulas

How do I calculate a discount?

Use the last row: enter the price and the discount percentage. The “minus” result is the sale price — for example $80 minus 25% = $60.

Why is a 50% increase followed by a 50% decrease not the original value?

Because the second percentage applies to a bigger number: 100 → 150 → 75. Percentage changes are always relative to the starting value.