Percentage Calculator
The most versatile percentage calculator. Find X% of Y, percentage change between two values, what percentage one number is of another, and reverse percentage calculations.
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Percentage Calculator
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Result
💡 Select a calculation mode and enter both numbers to see the percentage result.
Guide
How to Use Percentage Calculator
Select Calculation Type
Choose from: % of a number, % change, what % is X of Y, or add/subtract %.
Enter Values
Fill in the required numbers for your chosen calculation type.
Get Answer
The result updates instantly as you type. No need to click a button.
Frequently Asked Questions
To find X% of Y: multiply Y by X, then divide by 100. Example: 15% of 200 = (200 × 15) / 100 = 30.
Percentage change = ((New Value - Old Value) / Old Value) × 100. A positive result means increase, negative means decrease.
Percentage is a ratio out of 100. Percentile indicates the value below which a given percentage of data falls. For example, scoring in the 90th percentile means you scored better than 90% of others.
If a price after 20% discount is ₹800, the original = 800 / (1 - 0.20) = ₹1,000. Our calculator handles reverse percentages automatically.
To add X% to value Y: Y × (1 + X/100). To subtract X% from Y: Y × (1 - X/100). Example: Add 18% GST to ₹500 = 500 × 1.18 = ₹590.