Percentage Change Calculator
Calculate the percentage change between initial and final values. This calculator determines whether the change is an increase or decrease.
Calculate Percentage Change
Common Percentage Change Examples
100
→
120
+20%
(Increase)
100
→
80
-20%
(Decrease)
50
→
75
+50%
(Increase)
200
→
150
-25%
(Decrease)
1000
→
1100
+10%
(Increase)
80
→
60
-25%
(Decrease)
25
→
30
+20%
(Increase)
500
→
400
-20%
(Decrease)
How to Calculate Percentage Change
Formula
Percentage Change = ((Final Value - Initial Value) ÷ Initial Value) × 100
Steps
- Subtract the initial value from the final value
- Divide the result by the initial value
- Multiply by 100 to get the percentage
- Add a + sign for increases, - sign for decreases
Examples
- Increase: 100 → 120 = (120-100)/100 × 100 = +20%
- Decrease: 100 → 80 = (80-100)/100 × 100 = -20%
- No Change: 100 → 100 = (100-100)/100 × 100 = 0%
Applications
- Finance: Stock price changes, investment returns
- Economics: Inflation rates, GDP growth
- Business: Sales growth, profit margins
- Science: Population changes, temperature variations