The Percentage Increase Formula
Percentage increase measures the relative growth of a quantity. To find the percentage increase between two numbers, use the following math formula:
Percentage Increase = ((New Value - Original Value) / Original Value) × 100How to Calculate It Step-by-Step
- Find the Net Increase: Subtract the starting number (Original Value) from the ending number (New Value). For example, if a stock grows from $40 to $50, the increase is 50 - 40 = $10.
- Divide by the Original: Divide that difference by the starting number. In our example: 10 / 40 = 0.25.
- Convert to a Percentage: Multiply the decimal result by 100. So, 0.25 × 100 = 25%.
Real-World Applications
Percentage increase calculations are used extensively across industries to track financial, economic, and operational growth:
| Category | Real-World Example | Why it Matters |
|---|---|---|
| Salary Raise | Salary grows from $50,000 to $55,000. | Calculates a 10% increase in annual compensation. |
| Inflation | Monthly rent goes from $1,200 to $1,320. | Identifies a 10% hike in basic living expenses. |
| Business Growth | Monthly product sales increase from 400 to 500 units. | Measures a 25% sales growth rate. |
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How to Calculate in Excel
If you are working with spreadsheets, you can use a formula to automatically calculate percentage increase across columns.
=(B2-A2)/A2- A2: Original value
- B2: New value
- Format: Ensure the cell containing the formula is formatted as a percentage.