1. What is a Percentage Change Calculator?

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

Purpose: It helps analyze growth, decline, or change between two values in finance, business, science, and other fields.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• New Value — The current or updated measurement
• Old Value — The original or previous measurement

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

3. Importance of Percentage Change Calculation

Details: Percentage change helps compare relative differences regardless of the absolute values, making it useful for tracking growth rates, price changes, performance metrics, and more.

4. Using the Calculator

Tips: Enter both old and new values. The calculator will show the percentage increase (positive result) or decrease (negative result).

5. Frequently Asked Questions (FAQ)

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

Q2: What if my old value is zero?
A: Percentage change is undefined when the old value is zero (division by zero). The calculator won't compute in this case.

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

Q4: Can I use this for percentage increase calculations?
A: Yes, when the result is positive, it shows the percentage increase.

Q5: What are common applications of this calculation?
A: Financial growth, price changes, performance metrics, scientific measurements, and any situation comparing changes over time.