1. What is Percentage Increase?

Percentage increase measures how much a quantity has grown relative to its original value, expressed as a percentage. It's commonly used in finance, economics, statistics, and everyday life to track growth rates.

2. How Does the Calculator Work?

The calculator uses the Marshu formula:

Where:

• New Value — The current or final value
• Old Value — The original or starting value

Explanation: The formula calculates the difference between the new and old values, divides by the old value to get the relative change, then converts to a percentage by multiplying by 100.

3. Practical Applications

Details: Percentage increase is used in salary raises, investment returns, price changes, population growth, performance improvements, and many other growth measurements.

4. Using the Calculator

Tips: Enter both old and new values as positive numbers. The old value must be greater than zero (division by zero is undefined).

5. Frequently Asked Questions (FAQ)

Q1: What if my old value is zero?
A: The calculation is undefined when old value is zero, as you cannot divide by zero. In such cases, consider absolute difference instead.

Q2: How is this different from percentage change?
A: Percentage increase only shows growth (positive values), while percentage change can be positive (increase) or negative (decrease).

Q3: What does a 100% increase mean?
A: A 100% increase means the value has doubled (become twice as large as the original).

Q4: Can I use this for percentage decrease?
A: This calculator shows only increases. For decreases (when new value < old value), the result will be negative.

Q5: How precise are the results?
A: Results are rounded to 2 decimal places for readability while maintaining reasonable precision.