15% of 200 is 30. Enter 15 and 200 in the first calculator.

How do I calculate percentage increase?

Enter the old value and the new value in the percentage change section.

Can this be used for Amazon seller math?

Yes. Percent calculations help with discounts, margin checks, conversion rates, and ACOS sanity checks.

Everyday calculator

Percentage Calculator

Calculate percent of a number, what percent one number is of another, and percent increase or decrease. Useful for discounts, margins, grades, growth, and quick business math.

Percent of a number

Percent

Of number

What percent?

Part

Whole

Percentage change

From

Why add a percentage calculator?

Percentage calculators are evergreen utility pages. They support broad searches like discounts, grade percentages, revenue growth, conversion rate, and marketplace margin checks.

Amazon sellers can pair this with the Amazon Profit Calculator for margin and ACOS checks.