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％ Percentage Calculator

Three quick percentage calculators on one page: percent of a number, marks, and change.

What is X% of Y?
X is what % of Y? (e.g. marks)
% increase / decrease from X to Y (e.g. salary hike)

Percentage formulas

  • X% of Y = X × Y ÷ 100
  • X as a % of Y = X ÷ Y × 100
  • % change = (New − Old) ÷ Old × 100

Common uses include exam marks percentage, salary hike percentage, price increases, discounts and profit margins.

Frequently asked questions

How do I calculate marks percentage?

Divide the marks you obtained by the total marks and multiply by 100. The second calculator does this for you.

How do I calculate a salary hike percentage?

Enter the old salary as X and the new salary as Y in the third calculator.