Percentage Calculator
Calculate percentages, percentage change, and percentage of values
What is X% of Y?
What is
% of
=
?
X is what % of Y?
is what % of
=
?%
Percentage Change
From
to
=
?%
Increase/Decrease by %
% =
?
How to Use Percentage Calculator
- Choose your calculation type (percent of, percentage, or change)
- Enter the numbers in the input fields
- Results calculate automatically as you type
- All three calculation modes are available on one page
About Percentage Calculator
Calculate percentages easily with our free calculator. Find what percent one number is of another, calculate percentage increase/decrease, or find a percentage of any number. Perfect for sales, tips, grades, discounts, and everyday math.
Frequently Asked Questions
What percentage calculations are supported?
Three types - "What is X% of Y?", "X is what percent of Y?", and "Percentage change from X to Y".
How do I calculate a discount?
Use "What is X% of Y?" with the discount percentage and original price. Subtract the result from the original price.
How is percentage change calculated?
Percentage change = ((New - Old) / Old) × 100. Positive results mean increase, negative means decrease.
Does this handle decimal percentages?
Yes, you can enter decimal values like 12.5% or calculate results with decimal precision.