Percentage Calculator
Calculate percentages instantly. Four calculation modes for every percentage question.
What is X% of Y?
What is% of?
X is what % of Y?
is what % of?
Percentage Change
Fromto
Increase / Decrease by %
±%
FAQ
How do I calculate a percentage?
Use the first calculator: enter the percentage and the number. For example, 15% of 200 = 30.
How do I find percentage change?
Use the Percentage Change calculator. Enter the original and new values. The tool calculates the % increase or decrease.
What is the percentage formula?
Percentage = (Part / Whole) × 100. For example, 25 is 12.5% of 200 because (25/200) × 100 = 12.5%.
Is this calculator accurate?
Yes. All calculations use standard floating-point math with up to 6 decimal places of precision.
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