Free Online Percentage Calculator
Solve any percentage problem instantly. Calculate what X% of Y is, find percentage increase or decrease, or determine what percent one number is of another.
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How to Use the Percentage Calculator
1
Choose the type of calculation you need.
2
Enter the numbers in the input fields.
3
See the result calculated instantly.
Frequently Asked Questions
What can this calculator do?
It solves three types of percentage problems: (1) What is X% of Y? (2) X is what % of Y? (3) What is the percentage change from X to Y?
How do I calculate a discount?
Enter the original price and discount percentage. For example, 20% of $50 = $10 discount, making the final price $40.
How is percentage change calculated?
Percentage change = ((New Value - Old Value) / Old Value) × 100. A positive result means increase; negative means decrease.