1. What is a Percentage Change Calculator?

Definition: This calculator measures the percentage difference between an original value and a new value.

Purpose: It helps analyze growth, decline, or change in various contexts like finance, statistics, and business metrics.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• New Value — The current or ending value
• Original Value — The previous or starting value

Explanation: The difference between values is divided by the original value to get relative change, then multiplied by 100 to convert to percentage.

3. Importance of Percentage Change Calculation

Details: Percentage change provides a standardized way to compare changes across different scales and magnitudes.

4. Using the Calculator

Tips: Enter the original value and new value. The original value cannot be zero. Results show both percentage and direction (increase/decrease).

5. Frequently Asked Questions (FAQ)

Q1: What does a negative percentage mean?
A: A negative percentage indicates a decrease from the original value to the new value.

Q2: Why can't the original value be zero?
A: Division by zero is mathematically undefined, making percentage change calculation impossible.

Q3: How is this different from percentage difference?
A: Percentage change compares two values over time, while percentage difference compares two simultaneous values.

Q4: What's considered a significant percentage change?
A: Significance depends on context. In finance, 5% might be significant, while in scientific measurements, 0.1% could be crucial.

Q5: Can I calculate reverse percentage change?
A: Yes, you can rearrange the formula to find original value given new value and percentage change.