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Percentage Change Calculator
Calculate percentage increase or decrease between two values
How Percentage Change Works
Percentage change measures the relative difference between two values, showing how much a quantity has increased or decreased in percentage terms relative to its original value.
Enter the original (starting) value
Enter the new (ending) value
Click "Calculate Change" to see the percentage difference
View both percentage and absolute changes
Copy the result for reporting or analysis
Percentage Change Formula:
% Change = [(New - Original) / Original] × 100
Positive result = Increase
Negative result = Decrease
Zero result = No change
Common Examples:
100 → 120: +20% increase
100 → 80: -20% decrease
50 → 75: +50% increase
200 → 150: -25% decrease
Real-World Applications:
Finance: Stock price changes, investment returns
Business: Sales growth, revenue changes
Economics: Inflation rates, GDP growth
Education: Grade improvements, test score changes
Science: Experimental results, measurement changes
Important Notes:
Percentage change is relative to the original value
Same absolute change gives different percentages for different bases
Useful for comparing changes across different scales
Shows proportional rather than absolute differences