How to Calculate Percentages
Percentages are a way of expressing a number as a fraction of 100. They are widely used in finance, science, and everyday life to describe proportions, rates, and changes.
- Percentage of a Number: Multiply the number by the percentage fraction (e.g., 50% of 100 = 0.50 * 100 = 50).
- X is what % of Y: Divide X by Y and multiply by 100.
- Percentage Change: Calculate the difference between the two numbers, divide by the original number, and multiply by 100.