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 in financial, scientific, and business contexts.

2. How the Calculator Works

The calculator uses the percentage increase formula:

And calculates the yearly average by dividing the total increase by the number of years:

Example: If an investment grows from $1,000 to $1,500 over 5 years:

• Total increase = (1500-1000)/1000 × 100 = 50%
• Yearly increase = 50% / 5 years = 10% per year

3. Applications of Percentage Increase

Common Uses:

• Financial growth (investments, revenue, profits)
• Population growth rates
• Price inflation calculations
• Scientific measurements (bacterial growth, chemical reactions)
• Business performance metrics

4. Using the Calculator

Instructions:

1. Enter the original (old) value
2. Enter the new value
3. Enter the number of years over which the increase occurred
4. Click "Calculate" to see both total and yearly percentage increases

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 handle decreases in value?
A: The calculator will show a negative percentage for decreases, which represents a percentage decrease.

Q3: Why calculate yearly percentage increase?
A: Yearly rates allow comparison of growth over different time periods by standardizing to a per-year basis.

Q4: What if my old value was zero?
A: Percentage change from zero is undefined (division by zero). The calculator requires positive values.

Q5: Can I use this for non-yearly periods?
A: Yes, just enter the appropriate time period (e.g., months, days) and interpret the results accordingly.