1. What is Percentage Increase?

Percentage increase is a mathematical concept that measures how much a quantity has grown relative to its original value, expressed as a percentage of the original amount.

2. How Does the Calculator Work?

The calculator uses the percentage increase formula:

Where:

• Old Number — The original value before the increase
• Rate — The percentage increase to apply
• New Number — The resulting value after the increase

Explanation: The formula adds the percentage increase to 100% (represented as 1) and multiplies this by the original value to get the increased amount.

3. Practical Applications

Details: Percentage increase calculations are used in finance (interest calculations), retail (price increases), salary negotiations, statistics, and many other fields where growth needs to be quantified.

4. Using the Calculator

Tips: Enter the original number and the percentage increase you want to apply. Both values must be non-negative numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between percentage increase and absolute increase?
A: Percentage increase shows growth relative to the original size, while absolute increase shows the actual numerical difference.

Q2: How do I decrease a number by a percentage?
A: Use the same formula but with a negative percentage value, or subtract the percentage from 100% before multiplying.

Q3: Can I use this for compound percentage increases?
A: No, this calculates a single percentage increase. For compound increases, you would need to apply the formula multiple times.

Q4: Why does a 100% increase double the number?
A: Because 100% of the original number equals the original number itself, so adding 100% means adding the original amount to itself.

Q5: How do I reverse a percentage increase?
A: To find the original number after an increase, divide the new number by (1 + percentage/100).