Percentage Calculator

Calculate percentages, percentage change, and percentage of numbers.

🧮

Percentage

Choose a calculation type and enter the values.

Result
0
—

Worked example

With the default inputs shown below, this calculator returns the following results:

InputValue
TypeWhat is X% of Y?
Value X15
Value Y200
ResultValue
Result30.00

Values shown are produced by this page in your browser; change any input to update them.

How to use the Percentage
  1. Type — default What is X% of Y?
  2. Value X — default 15
  3. Value Y — default 200
  4. Press Calculate to update the results instantly.

Frequently asked questions

Divide the difference by the original. Rising from 200 to 250 is 50 / 200 = 25%; falling back to 200 is only a 20% drop.
Going from 5% to 7% is a rise of 2 percentage points, but a 40% increase. Mixing the two is one of the most common reporting errors.
Divide the sale price by 1 minus the discount. A $64 item after 20% off was $64 / 0.8 = $80.

Sources & references

Related Utilities Tools

Discount CalculatorQuick MathElectricity BillBill SplitterUniversal CalculatorMarkup CalculatorMedical CostSales TaxState Income TaxIncome Tax