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Percentage calculator
Three everyday questions in one tool: a percent of a number, one number as a percent of another, and the change between two numbers.
The three formulas
| Question | Formula | Example |
|---|---|---|
| X% of Y | Y × X ÷ 100 | 15% of 2,000 = 300 |
| X is what % of Y | X ÷ Y × 100 | 300 of 2,000 = 15% |
| Change from X to Y | (Y − X) ÷ X × 100 | 50,000 to 56,000 = +12% |
Why does a 10% fall followed by a 10% rise leave me lower?
Each percentage applies to a different base. ₹100 falls 10% to ₹90; 10% of ₹90 is ₹9, so it only rises back to ₹99.
What is the difference between percent and percentage points?
A rate rising from 5% to 6% is a rise of one percentage point, but a 20% increase in the rate itself.