1. What is Percentage Change?

Percentage change measures the degree of change over time. It's commonly used in business to track sales growth or decline, financial performance, and other metrics.

2. How Does the Calculator Work?

The calculator uses the percentage change formula:

Where:

• \( New \) — Current or new value
• \( Old \) — Previous or old value

Explanation: The formula calculates the relative change between two values expressed as a percentage of the original value.

3. Importance of Percentage Change

Details: Percentage change is crucial for business analysis, financial reporting, and performance tracking. It provides a standardized way to compare changes across different scales.

4. Using the Calculator

Tips: Enter the old and new values in any currency (the calculator works with the numerical values). The old value must be greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What does a positive percentage mean?
A: A positive percentage indicates an increase from the old value to the new value.

Q2: What does a negative percentage mean?
A: A negative percentage indicates a decrease from the old value to the new value.

Q3: Why can't the old value be zero?
A: Division by zero is mathematically undefined, so the calculation requires a non-zero old value.

Q4: How is this different from percentage difference?
A: Percentage change compares a new value to an old value, while percentage difference compares any two values without directionality.

Q5: Can I use this for non-financial metrics?
A: Yes, the formula works for any numerical values where you want to measure relative change.