Percentage Calculator US
Work out percentages, percentage increase, decrease and difference.
How it works
Switch modes to find a percentage of a number, what percentage one value is of another, or the percentage change between two values.
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 15% of 200 is 200 × 15 ÷ 100 = 30.
How do I find a percentage change?
Subtract the old value from the new value, divide by the old value, then multiply by 100. A rise from 50 to 60 is a 20% increase.
Percentage Calculator
A simple, fast way to handle every kind of percentage question — what is X% of a number, what percentage one number is of another, and the percentage increase or decrease between two values. Useful for students, shoppers and anyone working with figures in United States.
What you can work out
- X% of a value (e.g. 15% of 200).
- What percentage one number is of another.
- Percentage increase or decrease between two numbers.
- Reverse percentages — find the original before a change.
Quick examples
To find a tip, take the percentage of the bill. To find a markup, calculate the percentage increase from cost to price. To check a discount, calculate the percentage decrease from the original price.
More questions
How do I calculate a percentage increase?
Subtract the old value from the new value, divide by the old value, then multiply by 100. The calculator does this for you.
What is the difference between percentage and percentage points?
Percentage points are the absolute gap between two percentages, while a percentage change is relative to the starting figure — they are not the same thing.
Results are estimates for general guidance in United States and may not reflect the latest local rates, fees or rules. Check official sources before making decisions.