Percentage Calculator
Answer everyday percentage questions — X% of Y, X as a percent of Y, and percent increase or decrease.
Answer
30
Show the work
Turn the percent into a decimal
X ÷ 100
15 ÷ 100 = 0.15
Multiply by Y
X% of Y = (X ÷ 100) × Y
0.15 × 200 = 30
How it works
X% of Y = X ÷ 100 × Y · X is (X ÷ Y × 100)% of Y · change = (Y − X) ÷ X × 100
Questions
- How does the percentage calculator work?
- X% of Y = X ÷ 100 × Y · X is (X ÷ Y × 100)% of Y · change = (Y − X) ÷ X × 100.
- What do I need to enter?
- Question, X, Y. Optional fields can be left blank.
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