Calculator

Percentage Calculator

Percent of a number, percentage difference and percentage increase or decrease.

Percentage calculator

Fill in any two boxes; the third is worked out.

% of =

Enter two values.

In everyday phrases

What is % of ? –
is what % of ? –
is % of what? –

Percentage change

From to –
% = –

Percentage difference

Between and –

Formulas

  • P% of X: Y = P ÷ 100 × X. So 20% of 1,500 = 300.
  • A is what % of B: A ÷ B × 100.
  • Percentage change from old to new: (new − old) ÷ old × 100. From 80 to 100 is a 25% increase, but from 100 back to 80 is a 20% decrease.
  • Percentage difference compares two values with no “before” and “after”: |A − B| ÷ ((A + B) ÷ 2) × 100.