Percentage Calculator
Calculate percentages, increases, decreases, and percentage changes
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Common Percentages
10% = 1/10
20% = 1/5
25% = 1/4
33% = 1/3
50% = 1/2
75% = 3/4
What is X% of Y?
Formula
(Percentage ÷ 100) × Value = Result
Common Examples
Shopping Discount
$100 item with 20% off = $80
Sales Tax
$100 + 8% tax = $108
Tip Calculation
$50 bill + 18% tip = $59
Grade Score
45/50 correct = 90%