Percentages
Calculate a percentage, a share or a change between two values.
Your inputs stay in your browser. Displayed results are rounded to a maximum of 12 significant digits.
Method and assumptions
Method version 1.0.0 · Updated
Percentage of a value
Formula: value × rate ÷ 100
Example: 20% of 150 = 30.
- rate
- Percentage (%)
- value
- Reference value
Share as a percentage
Formula: part ÷ total × 100
Example: 30 out of a total of 150 is 20%. The total must be positive.
- part
- Part
- total
- Total
Percentage change
Formula: (next − previous) ÷ previous × 100
Example: going from 80 to 100 is a +25% change. A decrease gives a negative result. The initial value must be positive.
- previous
- Initial value
- next
- Final value
Deterministic floating-point calculation. The displayed result is rounded to a maximum of 12 significant digits.