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Percentage Calculator
Calculate percentages, percentage increase or decrease, and percentage difference instantly.
Formula verified by CalcPro.pro Editorial TeamLast updated May 2025
About This Calculator
A percentage calculator handles the most common percentage calculations: finding a percentage of a number, measuring percentage change between values, computing percentage decrease, and finding the percentage difference between two values.
How to Use This Calculator
- 1Select the calculation type
- 2Enter the required values
- 3Click Calculate
Formula Used
% of number: (P/100)×N | % change: ((New−Old)/Old)×100 | % difference: (|A−B|/Avg)×100
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FAQ
Frequently Asked Questions
Common questions about the percentage calculator answered.
How do I calculate 15% of 200?+
Multiply 200 by 0.15 (which is 15/100) to get 30. Or use the '% of Number' mode above and enter 15 and 200. The answer is 30.
What is percentage difference vs percentage change?+
Percentage change measures direction: from a specific starting point to a new point. Percentage difference is non-directional: it measures relative difference between two values using their average as the base. Use percentage change for before/after comparisons and percentage difference for comparing two independent values.
How do I find what percentage one number is of another?+
Divide the first number by the second, then multiply by 100. For example, 25 is what percent of 80? Answer: (25/80) × 100 = 31.25%. Use the '% of Number' mode and enter 31.25 and 80 to verify.
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