1. What is the Percentage Change Calculator?

The Percentage Change Calculator calculates the new value after applying a percentage increase or decrease to an original value. This is useful in finance, economics, statistics, and many other fields.

2. How Does the Calculator Work?

The calculator uses the percentage change formula:

Where:

• Old Value — The original value before change
• Rate — The percentage change (positive number)
• ± — + for increase, - for decrease

Explanation: The formula multiplies the original value by a factor that represents the percentage change.

3. Applications of Percentage Change

Details: This calculation is used in price changes, salary adjustments, investment growth, statistical analysis, and many business calculations.

4. Using the Calculator

Tips: Enter the original value, the percentage rate, and select whether it's an increase or decrease. The calculator will show the new value after the change.

5. Frequently Asked Questions (FAQ)

Q1: Can I calculate multiple percentage changes?
A: For consecutive changes, apply each percentage change sequentially to the previous result.

Q2: How is this different from percentage difference?
A: Percentage change compares a new value to an old value from the same entity, while percentage difference compares two distinct values.

Q3: What if I want to reverse a percentage change?
A: To reverse an increase, divide by (1 + rate/100). To reverse a decrease, divide by (1 - rate/100).

Q4: Can the rate be more than 100% for decreases?
A: For decreases, the rate should be less than 100% to avoid negative results.

Q5: How precise are the calculations?
A: Results are rounded to 2 decimal places for currency values, but you can adjust precision as needed.