Percentage calculator
The six most common percentage calculations. Every result shows the full working, so it is clear what the percentage is taken from.
How to get percentages right
A percent is one hundredth of a whole, so “23% of 1500” means splitting 1500 into a hundred parts and taking twenty-three of them: 1500 × 23 / 100 = 345. The trouble starts when it is unclear what the whole is.
An increase and a decrease by the same percentage do not cancel out. A hundred raised by 10% is 110, and 110 cut by 10% leaves 99, not 100 — because the second percentage is taken from the larger figure.
Do not confuse percent with percentage points. A rate going from 5% to 7% rises by 2 percentage points, but by 40 percent. In writing about interest and margins that difference changes the meaning of a sentence.
The results are provided for guidance only. Always verify figures before using them in official documents.