Percentage Calculator
Calculate percentages, percentage changes, and solve percentage problems
Basic Percentage Calculator
Calculate what percentage one number is of another
Basic Percentage Calculation
Instant Calculation
25
is
25%
of
100
Percentage Calculators
Various percentage calculation tools for different scenarios
Percentage Change
Percentage Change:
+20%
Difference:
20
Percentage of Number
Result:
50
Discount Calculator
Discount Amount:
$20
Final Price:
$80
Tip Calculator
Tip Amount:
$7.50
Total Bill:
$57.50
Per Person:
$57.50
Tax Calculator
Tax Amount:
$8.50
Total Price:
$108.50
Markup Calculator
Markup Amount:
$20
Selling Price:
$100
Profit Margin:
20%
Percentage Formulas Reference
Common percentage calculation formulas and examples
Basic Percentage
Formula: (Part / Whole) × 100 = Percentage
Example: (25 / 100) × 100 = 25%
Percentage Increase
Formula: ((New - Original) / Original) × 100
Example: ((120 - 100) / 100) × 100 = 20%
Percentage Decrease
Formula: ((Original - New) / Original) × 100
Example: ((100 - 80) / 100) × 100 = 20%
Percentage of Number
Formula: (Percentage / 100) × Number
Example: (25 / 100) × 200 = 50
Add Percentage
Formula: Number × (1 + Percentage/100)
Example: 100 × (1 + 20/100) = 120
Subtract Percentage
Formula: Number × (1 - Percentage/100)
Example: 100 × (1 - 20/100) = 80