Percentage Calculator
Calculate percentages, percentage changes, and proportions easily.
What is X% of Y?
X is what % of Y?
Percentage Change
Increase / Decrease by %
This tool handles common percentage calculations - finding what percentage one number is of another, calculating a percentage increase/decrease, or finding the result of applying a percentage to a value. Useful for quick everyday math like calculating a tip, a discount, or a grade percentage.
Frequently asked questions
Typically: finding X% of a number, finding what percentage one number is of another, and calculating percentage increase or decrease between two values - covering the most common everyday percentage questions.
Yes - enter the original and new values to get the percentage increase or decrease between them.
Yes - a decrease is shown as a negative percentage change, distinguishing it clearly from an increase.