Percentage Calculator - Calculate Percentages Instantly
Free percentage calculator. Find X% of Y, what percent X is of Y, or the percentage change between two values.
Percentage Calculator
Find percentages of numbers or calculate what percent one number is of another.
Result
Enter your values and click Calculate to see the result.
How It Works
A percentage expresses a number as a fraction of 100. This calculator covers the three most common percentage problems in one place.
"What is X% of Y?" -- multiply Y by X and divide by 100. For example, 15% of 200 = (15 / 100) x 200 = 30.
"X is what percent of Y?" -- divide X by Y and multiply by 100. For example, 30 is what percent of 200? (30 / 200) x 100 = 15%.
"Percentage change from X to Y" -- subtract the original value from the new value, divide by the original value, and multiply by 100. A positive result is an increase; a negative result is a decrease.
Example
A product normally costs £80. It is on sale with a 25% discount. What is the discount amount?
Discount = 25% of £80 = (25 / 100) x £80 = £20.
Sale price = £80 - £20 = £60.
Alternatively, to find what percentage £20 is of £80: (20 / 80) x 100 = 25%.
Frequently Asked Questions
- How do I calculate X% of a number?
- Multiply the number by the percentage and divide by 100. For example, 30% of 150 = (30 / 100) x 150 = 45.
- How do I find what percentage one number is of another?
- Divide the part by the whole and multiply by 100. For example, 45 is what percent of 150? (45 / 150) x 100 = 30%.
- How is percentage change calculated?
- Percentage change = ((New Value - Original Value) / Original Value) x 100. A positive result means an increase; a negative result means a decrease.
- What is the difference between percentage and percentage points?
- A percentage point is an absolute difference between two percentages. If an interest rate rises from 2% to 5%, that is a 3 percentage-point increase, but a 150% relative increase.
- Is this calculator free to use?
- Yes. All QuantlyHub calculators are completely free with no sign-up required.
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