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Free percentage calculator. Calculate percentages, percent change, percent of a number, and more.
What is X% of Y?
X is what % of Y?
Percentage Change
Increase/Decrease by %
The percentage calculator handles every common percent question in one place: percent of a number, percent change between two values, what percent one number is of another, and reverse calculations. It removes the need to remember which formula to use.
Shoppers verifying discounts and sales tax, students working through math homework, business owners tracking growth metrics, and anyone reviewing reports that include percentages. It is also useful for tipping, taxes, and grading.
It eliminates the most frequent source of casual math errors and quickly reverses tricky cases like "this number is 23% of what?" It also confirms whether a discount or markup actually matches what was advertised.
It answers questions like "What is 35% of 240?", "If a price went from $80 to $96, what is the percent change?", and "120 is what percent of 480?"