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 to track growth rates, price changes, performance improvements, and other comparative metrics.

2. How Does the Calculator Work?

The calculator uses the percentage increase formula:

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

3. Practical Applications

Common Uses:

• Financial analysis (stock price changes, revenue growth)
• Sales performance tracking
• Academic grade improvements
• Population growth rates
• Price inflation calculations

4. Using the Calculator

Instructions: Enter both the new and old values. The old value cannot be zero (division by zero is undefined). Values can be positive or negative, but must be numerical.

5. Frequently Asked Questions (FAQ)

Q1: What if my result is negative?
A: A negative result indicates a percentage decrease rather than increase.

Q2: How is this different from percentage points?
A: Percentage increase is relative to the original value, while percentage points measure absolute difference between percentages.

Q3: What's the maximum possible percentage increase?
A: There's no upper limit. From zero, any positive value gives an infinite percentage increase.

Q4: Can I calculate percentage decrease with this?
A: Yes, the result will simply be negative when the new value is smaller than the old value.

Q5: Why do I get "Undefined" as a result?
A: This occurs when the old value is zero, since division by zero is mathematically undefined.