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 in prices, salaries, investments, and other metrics.

2. How Does the Calculator Work?

The calculator uses the percentage increase formula:

Example Calculation: If a product's price increases from $50 to $75:

• New Value = 75
• Old Value = 50
• Percentage Increase = ((75 - 50)/50) × 100 = 50%

3. Practical Applications

Common Uses:

• Salary raises and wage increases
• Price changes and inflation tracking
• Investment growth and portfolio performance
• Business revenue and sales growth
• Population growth rates

4. Using the Calculator

Instructions:

1. Enter the new (current) value
2. Enter the original (old) value
3. Click "Calculate" to get the percentage increase
4. The old value cannot be zero (division by zero is undefined)

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between percentage increase and absolute increase?
A: Absolute increase is the simple difference (New - Old), while percentage increase shows the change relative to the original value.

Q2: How do I calculate percentage decrease?
A: The same formula works - the result will be negative when the new value is smaller than the old value.

Q3: What if the old value was zero?
A: Percentage change from zero is undefined (division by zero). Consider absolute change instead.

Q4: How is this different from percentage points?
A: Percentage points measure absolute difference between percentages, while percentage increase measures relative change.

Q5: Can percentage increase be over 100%?
A: Yes, when the new value is more than double the old value (e.g., $100 → $300 is a 200% increase).

Example Calculations:

• 50 to 75 → 50% increase
• 80 to 100 → 25% increase
• 20 to 15 → 25% decrease
• 10 to 30 → 200% increase