Percentage Change Calculator
Calculate percentage increase, decrease, and change between values for financial analysis, business metrics, and data comparison. Perfect for tracking growth rates, performance metrics, and statistical analysis.
Select Calculation Type
Percentage Change Results
Primary Result
Change Type
Absolute Change
Multiplier
Calculation Breakdown
How the Percentage Change Calculator Works
Choose Calculation Type
Select whether you want to calculate percentage change, increase, decrease, or find a new value after applying a percentage change.
Enter Your Values
Input the original value and new value (or percentage change) based on your selected calculation type. Values can be positive, negative, or decimal numbers.
View Detailed Results
Get instant calculations with percentage change, absolute difference, multiplier, and complete breakdown showing the formula used.
Apply to Your Analysis
Use the results for financial analysis, performance tracking, growth rate calculations, and data comparison in your business or research.
Frequently Asked Questions
Percentage change is calculated using the formula: ((New Value - Original Value) ÷ Original Value) × 100. For example, if a value increases from 100 to 120, the percentage change is ((120 - 100) ÷ 100) × 100 = 20% increase.
Percentage increase occurs when the new value is higher than the original (positive change), while percentage decrease occurs when the new value is lower (negative change). Both use the same formula, but the result will be positive for increases and negative for decreases.
Yes, you can use negative numbers in percentage change calculations. However, be careful when the original value is negative, as this can lead to counterintuitive results. For example, going from -10 to -5 is actually a 50% increase (improvement) even though both numbers are negative.
The multiplier shows how many times larger (or smaller) the new value is compared to the original. A multiplier of 1.5x means the new value is 1.5 times the original (50% increase), while 0.8x means it's 0.8 times the original (20% decrease).
Percentage change calculations are essential for analyzing business performance: revenue growth, cost changes, market share variations, employee productivity, customer acquisition rates, and comparing performance across different time periods or business units.