1. What is Percent Change?

Percent change measures the relative difference between an old value and a new value, expressed as a percentage. It's commonly used to track growth, decline, or changes over time in various fields including finance, economics, and science.

2. How Does the Calculator Work?

The calculator uses the percent change formula:

Where:

• \( New \) — The new or current value
• \( Old \) — The original or previous value

Explanation: The formula calculates the relative difference between two values by finding the absolute change, dividing by the original value, and converting to a percentage.

3. Importance of Percent Change Calculation

Details: Percent change is crucial for analyzing trends, measuring performance improvements or declines, comparing data over time, and making informed decisions based on relative changes rather than absolute differences.

4. Using the Calculator

Tips: Enter both old and new values. The old value cannot be zero as division by zero is undefined. Values can be positive or negative numbers representing any measurable quantity.

5. Frequently Asked Questions (FAQ)

Q1: What does a negative percent change indicate?
A: A negative percent change indicates a decrease from the old value to the new value.

Q2: What does a positive percent change indicate?
A: A positive percent change indicates an increase from the old value to the new value.

Q3: Can percent change be greater than 100%?
A: Yes, percent change can exceed 100% when the new value is more than double the old value.

Q4: What if the old value is zero?
A: Percent change is undefined when the old value is zero, as it requires division by zero.

Q5: How is percent change different from percentage points?
A: Percent change measures relative change between two values, while percentage points measure the absolute difference between two percentages.