How to Use the Percentage Change Calculator
Percentage change shows how much a value has grown or declined relative to its original amount. Formula: % Change = (New โ Old) / Old ร 100. Enter the original and new values to get the result instantly.
- Positive result: the value increased (growth rate)
- Negative result: the value decreased (decline rate)
Example: A stock price rose from $50 to $65. Change = (65 โ 50) / 50 ร 100 = +30%. If it dropped to $40, change = (40 โ 50) / 50 ร 100 = โ20%.
Frequently Asked Questions
What is the difference between growth rate and percentage change?
Growth rate usually refers to positive change only, while percentage change covers both increases and decreases. This calculator handles both.
What if the original value is negative?
A negative original value makes the formula interpretation complex. It's generally recommended to use the absolute value as the base for clearer results.
Can I use decimals?
Yes. Decimal values are supported for precise percentage calculations.