Percentage Change Calculator
Need to find the percentage change between two numbers? Our Percentage Change Calculator instantly shows the increase or decrease as a percentage.
What Is
A percentage change calculator finds the relative difference between two values, expressed as a percentage of the original value. It calculates either the percentage increase or percentage decrease from an initial value to a final value. This is a fundamental mathematical operation used in finance (investment returns, price changes), science (experimental results), business (growth rates, sales figures), and everyday life (discount calculations, tip amounts). The formula divides the difference between the two values by the original value and multiplies by 100. Understanding percentage change helps you evaluate performance, compare data sets, and make informed decisions based on relative changes rather than absolute numbers.
How to Use
- Enter the original (starting) value
- Enter the new (final) value
- Click Calculate to see the percentage change
- A positive result means an increase, negative means a decrease
- Use the result to compare changes across different scales
Related Searches
People also search for: percentage change calculator, percent change, increase decrease percentage, relative change, growth rate calculator, price change percentage.
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Frequently Asked Questions
What is the formula for percentage change?
Percentage Change = ((New Value - Old Value) / Old Value) x 100.
What if the original value is zero?
Percentage change is undefined when the original value is zero.
Can I calculate percentage decrease?
Yes, if the new value is lower, the result will be negative indicating a decrease.
How is this different from percentage difference?
Percentage change uses the original value as reference. Percentage difference uses the average of both values.