Business percentage calculator
Solve the three percentage questions that appear most often in pricing and reporting.
- 15% of second value
- 120.00
- First as % of second
- 30.00%
- Change from first to second
- 233.33%
What this calculator works out
Useful for checking deposits, discounts, tax shares, conversion rates and changes between periods.
Calculation: Part = whole × rate. Ratio = part ÷ whole. Change = (new − old) ÷ old.
Practical example
For values 240 and 800 at 15%, the calculator shows 120 as 15% of 800, 240 as 30% of 800, and a 233.33% increase from 240 to 800.
Use the result carefully
- A percentage change needs a non-zero starting value.
- Percentage points and percentage change are different.
- Use the underlying amounts alongside percentages when reporting performance.