Percent Change Calculator
How It Works
This percent change calculator uses established formulas to provide accurate results.
The basic rule:
- Percent Change = ((New Value - Original Value) / |Original Value|) × 100
- Difference = New Value - Original Value
Results are estimates. Consult a professional for critical decisions.
Frequently Asked Questions
How do you calculate percent change?
Subtract the original value from the new value, divide by the original value, then multiply by 100. The formula is: ((New - Original) / Original) × 100.
What is the difference between percent increase and percent decrease?
If the new value is larger than the original, it is a percent increase. If the new value is smaller, it is a percent decrease. The formula is the same; the sign of the result tells you the direction.
Can percent change be more than 100%?
Yes. If a value more than doubles, the percent increase is over 100%. For example, going from 50 to 150 is a 200% increase.
How is percent change used in real life?
Percent change is used to describe stock market gains/losses, price changes, population growth, grade improvements, and many other comparisons over time.