Percentage Calculator
Calculate percentages, increases, decreases, and discounts instantly.
Input Values
Calculate the percentage increase from one value to another.
Start Value: 80, End Value: 100 => 25.00% increased.
* High precision conversion using standard scientific constants. Result limited to 10 decimal points for readability.
What is Percentage Calculator?
Value mode multiplies the base by a percentage. Increase and decrease compare the change to the original value; a zero original has no defined percentage change. Discount returns the remaining price, not the amount saved. Results update as you type and are displayed to two decimals. Signed values follow the algebraic formula; they are not a financial recommendation.
Examples
- 200 × 25 ÷ 100 = 50
- 100 → 120: (120 − 100) ÷ 100 × 100 = 20%
How to use Percentage Calculator
1. Select a mode (e.g., What is X% of Y, Discount). 2. Enter the required numbers in the input fields. 3. The result is calculated instantly. Use 'Copy Result' to save it.