Percentage Calculator
Calculate percentages online for free. Find a percentage of a number, find what percentage one number is of another, or calculate percentage increase and decrease instantly.
What is X% of Y?
Find a percentage of any number. Example: What is 25% of 400?
X is what % of Y?
Find what percentage one number represents of another number.
Percentage Increase / Decrease
Calculate the percentage change between an original value and a new value.
How to Calculate Percentages
A percentage represents a number as a fraction of 100. Use the calculators above to quickly solve common percentage problems without doing the calculation manually.
What is X% of Y?
To find X% of Y, multiply X by Y and divide the result by 100.
Formula: X% of Y = (X ÷ 100) × Y
X is what percentage of Y?
Divide the first number by the total number and multiply the result by 100.
Formula: Percentage = (X ÷ Y) × 100
How to calculate percentage increase or decrease
Subtract the original value from the new value, divide the difference by the original value, and multiply by 100.
Formula: Percentage change = ((New value − Original value) ÷ Original value) × 100
Example: 25% of 400
25 ÷ 100 × 400 = 100
Example: 50 is what % of 200?
50 ÷ 200 × 100 = 25%
Example: 80 to 120
The increase is 50%.
Example: 200 to 150
The decrease is 25%.
Percentage calculator for discounts
You can use the percentage calculator to understand discounts and price changes. For example, to find a 20% discount on ₹1,000, calculate 20% of 1,000, which is ₹200. The price after the discount is ₹800.
Percentage calculator for exam marks
To calculate exam percentage, divide the marks obtained by the total marks and multiply by 100. For example, 450 marks out of 500 is 90%.
Percentage Calculator FAQs
How do I calculate a percentage?
Divide the part by the total and multiply by 100. For example, 25 out of 100 is 25%.
What is 25% of 400?
25% of 400 is 100. Enter 25 and 400 in the first calculator above to verify the result.
What percentage is 50 of 200?
50 is 25% of 200. Use the second calculator to calculate this type of percentage.
How do I calculate percentage increase?
Subtract the original value from the new value, divide by the original value and multiply by 100.
How do I calculate percentage decrease?
Subtract the new value from the original value, divide the difference by the original value and multiply by 100.
How do I calculate exam percentage?
Divide the marks obtained by the total marks and multiply by 100. For example, 450 out of 500 equals 90%.
Can I use this calculator for discounts?
Yes. Use the first calculator to find the discount amount, then subtract that amount from the original price.
Is this percentage calculator free?
Yes. Toolton's Percentage Calculator is free to use and does not require an account.