Percentage Calculator
All percentage calculations in one place: X% of a number, discounts, increase and decrease, difference between values.
%
30
15% × 200 = 30
Formula
result = number × percent ÷ 100
Example: 15% of 200 = 30
%
300
You save
1200
Final price
1500 − 20% = 1200
Formula
total = price × (1 − discount ÷ 100)
Example: 20% off $150 → save $30, pay $120
+25%
(100 − 80) ÷ 80 × 100 = +25%
Formula
change = (new − old) ÷ |old| × 100%
Example: growth from 80 to 100 = +25%
+20%
B relative to A
(120 − 100) ÷ 100 × 100 = +20%
Formula
difference = (B − A) ÷ |A| × 100%
Example: 120 relative to 100 = +20%
1. Part — what percentage of the whole?
15%
30 ÷ 200 × 100 = 15%
2. Part — is X% of what number?
%
200
30 ÷ 15 × 100 = 200
Example: 30 is 15% of 200
Calculators