1. What is a Percent Change Calculator?

Definition: This calculator measures the percentage change between two numbers, showing how much a value has increased or decreased relative to its original value.

Purpose: It helps analyze growth rates, price changes, performance improvements, and other comparative measurements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( Num1 \) — Original/initial value
• \( Num2 \) — New/final value

Explanation: The difference between the two numbers is divided by the original number, then multiplied by 100 to convert to a percentage.

3. Importance of Percent Change Calculation

Details: Percent change is widely used in finance, economics, science, and business to compare changes over time or between different quantities.

4. Using the Calculator

Tips: Enter the original number (Num1) and the new number (Num2). The calculator will show the percentage increase or 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: What if my original number is zero?
A: The calculation is undefined when Num1 is zero, as division by zero is impossible.

Q3: How is this different from percentage difference?
A: Percent change compares a new value to an original value, while percentage difference compares any two values without reference to which is original.

Q4: Can I use this for percentage increase calculations?
A: Yes, when Num2 > Num1, the result will be a positive percentage indicating an increase.

Q5: What are some practical applications?
A: Useful for calculating price changes, growth rates, test score improvements, sales performance, and more.