Percentage Calculator
Calculate a percentage of a number, or work out percentage-based increases and decreases.
About this tool
This percentage calculator finds a specified share of a number. It is useful for marks, budgets, price comparisons, commissions and other situations where a rate is expressed out of 100.
How to use this calculator
- Enter the base value.
- Enter the percentage rate.
- Select Calculate to see the amount represented by that percentage.
Formula
Worked example
For 20% of 150: 150 × 20 ÷ 100 = 30. The result is 30.
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage and divide by 100. For example, 15% of 200 is 200 × 15 ÷ 100 = 30.
How do I find what percentage one number is of another?
Divide the part by the whole and multiply by 100. This page calculates a percentage amount; percentage change is available in the separate Percentage Change tool.
Can I use decimals?
Yes. Values such as 12.5% can be used. Make sure the base value and percentage are entered in the intended fields.
Does the answer have a unit?
The result uses the same unit as the base value. If the base is rupees, the result is rupees; if it is a score, the result is in score units.
SolveKit provides general calculations for information and planning. Results depend on the values and assumptions entered. For financial, investment, payroll or tax decisions, confirm the applicable product terms and current rules with an authoritative source or qualified professional.