Percentage Calculator
The Percentage Calculator solves the three most common percentage questions: what is X% of a number, what percentage is one value of another, and the percentage increase or decrease between two values. All calculations are instant and run entirely in your browser.
Formula
percentage of a number = number × percentage ÷ 100 what percent = part ÷ whole × 100 % change = (new − old) ÷ old × 100
Examples
- • What is 25% of £800? Answer: £200.
- • What percentage is 30 of 120? Answer: 25%.
- • A price rises from £40 to £50. Change = +25%.
- • A salary rises from £2,000 to £2,200. Increase = 10%.
How to use this calculator
Choose the type of percentage calculation you need, enter the two values, and the result appears instantly. Use the Copy result button to save it anywhere.
Frequently asked questions
How do I calculate a percentage of a number?
Multiply the number by the percentage, then divide by 100. For 25% of 800: 800 × 25 ÷ 100 = 200.
How is percentage change calculated?
Subtract the old value from the new value, divide by the old value, and multiply by 100. A positive result is an increase, a negative result is a decrease.
You may also need
Savings Goal Calculator
Work out exactly how much to save each week, month or day to reach a savings target by your chosen date.
Discount Calculator
Find the final price after a percentage discount and see exactly how much you save.
VAT Calculator
Add or remove VAT at standard, reduced or zero rates to any amount.
Profit Calculator
Calculate profit, profit margin and markup from revenue and cost.
Learn more
ARANGEE provides informational tools only. For financial, tax or legal decisions, verify with a qualified professional. See our disclaimer.
