Calculators
Percentage Calculator
Answer the everyday percentage questions at once: what % one number is of another, X% of a number, and adding or removing a percentage.
About the Percentage Calculator
The Percentage Calculator answers the four percentage questions people ask most, each in its own card that reads like a sentence: what is X% of a number, what percent one number is of another, the percentage change between two numbers, and a number with a percentage added or taken away.
What you can do with the Percentage Calculator
- Four calculators in one: X% of a number, what percent, % change, and adding or removing a %.
- Reads like a sentence: Each card is phrased the way you'd ask the question.
- Live answers: Results update as you type.
- Copy the answer: One tap to copy.
Two questions that sound alike
"25 is what percent of 200?" and "What is 25% of 200?" use the same numbers but have different answers, 12.5% and 50. That's why they sit in separate cards here, so you always know which question you're answering.
Percentages don't reverse
Adding 50% and then taking away 50% does not bring you back to where you started: 100 + 50% is 150, but 150 − 50% is 75. The same thing happens with prices that rise and then fall by the same percentage, which is why a 20% drop after a 20% rise still leaves you worse off.
Percent vs percentage points
If an interest rate moves from 5% to 6%, it rose by one percentage point, but by 20% in relative terms, that's what the "Percentage change" card shows. News reports sometimes mix these up, so check which one is meant.
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Frequently Asked Questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 18% of 450 is 450 × 18 ÷ 100 = 81.
How do I work out marks as a percentage?
Use the "What percent is it?" card: marks scored as the part and maximum marks as the whole. 432 out of 500 is 86.4%.
Can a percentage be more than 100?
Yes. 300 is 150% of 200. Only shares of a whole, like a test score, are limited to 100%.
How do I find the original price before a percentage was added?
Divide by (1 + rate / 100), not subtract the percentage. If a price with 18% GST is 1,180, the original is 1,180 / 1.18 = 1,000. The "removed" result on this page gives 1,180 - 18% = 967.60, which answers a different question.
How do I find the original value after a percentage discount?
Divide by (1 - rate / 100). If something costs 800 after 20% off, the original price was 800 / 0.8 = 1,000. Check it with the first card: 20% of 1,000 is 200, and 1,000 - 200 = 800.
If something goes up 10% and then down 10%, is it back to the start?
No. Starting from 100, a 10% rise gives 110, and 10% off 110 is 11, leaving 99. The second percentage is taken from a larger number, so the overall result is a 1% fall.
What is the difference between percent and percentage points?
Percentage points are the plain gap between two percentages, while percent change is relative. If a loan rate goes from 6% to 7%, that is a rise of 1 percentage point but a 16.67% increase, which you can check in the Percentage change card.
How do I calculate what percentage I scored in an exam?
Use the What percent is it? card: enter your marks as the part and the maximum marks as the whole. For example, 432 out of 500 is 432 / 500 x 100 = 86.4%. For a CGPA-based result, use the GPA calculator instead.
How do I add 18% to an amount?
Enter the amount and 18 in the Add or remove a percentage card. It multiplies by 1.18, so 2,000 becomes 2,360. For GST with the CGST and SGST split, the site's GST calculator shows the full breakdown.
Is X% of Y the same as Y% of X?
Yes. Both equal X x Y / 100, so 8% of 50 is the same as 50% of 8, which is 4. Swapping the numbers can make a percentage much easier to work out in your head.
Can I use decimals or negative numbers?
Yes, every box accepts decimals, such as 12.5% of 3,600, and negative numbers. Answers are shown with up to four decimal places and formatted with Indian digit grouping, so a large result appears as 1,00,000 rather than 100,000.
Read the guide
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