AI Tools Finder
Home › Dev Tools › Percentage Calculator

Percentage Calculator (%)

X% of Y, what percent X is of Y, and the percentage change from A to B.

An all-purpose percentage calculator: find what percent X is of Y, calculate a percentage increase/decrease, or find the percent change between two numbers.

How to use Percentage Calculator

  1. Choose the type of percentage calculation.
  2. Enter the numbers.
  3. See the result instantly.

Frequently asked questions

How do you calculate the percent increase between two numbers?

Subtract the old number from the new number, divide by the old number, then multiply by 100. For example, going from 200 to 250 is a 25% increase.

Related tools

Discount / Markdown Calculate the price after a percentage discount and the amount saved, or work out the discount % from the original and final price. VAT Calculator Add VAT to an amount or extract it (8%/10%): get the tax amount and the total/pre-tax price. Selling Price & Profit Calculate selling price from cost price using markup or margin, or analyze profit when you know both the cost and selling price. Compound Interest / Savings Calculate the future value of savings or investments with recurring contributions, compounded over time. Installment / Loan Interest Calculate the monthly payment, total interest, total amount due, and repayment (annuity) schedule for a loan or installment plan. Gross to Net Salary Convert between Gross and Net salary based on Vietnam's mandatory social/health/unemployment insurance (BHXH/BHYT/BHTN) and progressive personal income tax.
🔒 Percentage Calculator (%) runs entirely in your browser — the data you enter is not sent to any server. Free, no sign-up required. See145 free dev tools more.