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Percentage Calculator

Three tools in one — pick the question you're trying to answer.

What is 18% of 240?
%
Answer
43.2
18% of 240 = 43.2
43 is what % of 240?
Answer
17.9%
43 is 17.92% of 240
From 200 to 240
Change
+20%
Increased by 40 (20%)

How percentage calculations work

What is X% of Y? → Y × (X ÷ 100)
X is what % of Y? → (X ÷ Y) × 100
% change from A to B → ((B − A) ÷ A) × 100

Common uses

  • Discounts: "30% off $85" → 85 × 0.30 = $25.50 off
  • Test scores: "43 out of 50" → (43÷50)×100 = 86%
  • Salary raise: from $60k to $65k → ((65k−60k)÷60k)×100 = 8.3% raise