Percentage formulas
- A% of B = A ÷ 100 × B
- A is what percent of B = A ÷ B × 100%
- Change from A to B = (B − A) ÷ A × 100%
Frequently asked questions
How do I enter decimals?
Use a dot, for example 12.5. Commas are treated as thousands separators.
What is the difference between percent and percentage points?
A rate rising from 5% to 6% is a 1 percentage-point increase, but a 20% relative increase.
Results are simulations to help planning and may differ from official calculations by agencies, employers or banks. Last updated 2026-11-02.