Percentage Calculator
Solve various percentage problems including finding percentages, discounts, and increases.
Calculator
What is X% of Y?
Percentage Change (Increase/Decrease)
X is what percent of Y?
How it Works: Formula & Examples
The percentage calculator helps you solve various percentage-related problems quickly.
1. What is X% of Y?
To find a percentage of a number, you convert the percentage to a decimal and multiply by the number.
Result = (Percentage / 100) * Number
Example: What is 20% of 150?
(20 / 100) * 150 = 0.20 * 150 = 30
2. Percentage Change / Increase / Decrease
To find the percentage change between two values, use the formula:
Percentage Change = ((New Value - Old Value) / Old Value) * 100
Example: Price changed from $50 to $60. What&pos;s the percentage change?
((60 - 50) / 50) * 100 = (10 / 50) * 100 = 0.2 * 100 = 20%
3. X is what percent of Y?
To find what percentage one number is of another, divide the part by the whole and multiply by 100.
Result = (Part / Whole) * 100
Example: 15 is what percent of 75?
(15 / 75) * 100 = 0.2 * 100 = 20%
Frequently Asked Questions
What is a percentage?
A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign "%".
How do I calculate a discount?
To calculate a discount, find the percentage of the original price that is being discounted, then subtract that amount from the original price. For example, a 10% discount on $100 is $100 - (10% of $100) = $100 - $10 = $90.
Can I calculate percentage increase/decrease?
Yes, the "Percentage Change" section helps you calculate both percentage increase (positive result) and decrease (negative result) between two values.