Percentage Calculator
Frequently Asked Questions
How do I calculate a percentage of a number?
To find X% of Y, multiply Y by X and divide by 100. For example, 15% of 200 is calculated as (200 x 15) / 100 = 30.
How do I find what percentage one number is of another?
To find what percent X is of Y, divide X by Y and multiply by 100. For example, to find what percent 30 is of 200: (30 / 200) x 100 = 15%.
How do I calculate percentage increase or decrease?
To find the percentage change from an original value to a new value, subtract the original from the new, divide by the original, and multiply by 100. A positive result indicates an increase, while a negative result indicates a decrease.
What are common uses for percentage calculations?
Percentage calculations are used in many areas including:
- Calculating discounts and sales prices
- Computing tips at restaurants
- Understanding interest rates on loans
- Analyzing data and statistics
- Tracking price changes and inflation