Calculate the percentage change between two numbers. Perfect for analyzing growth rates, price changes, population shifts, business metrics, and any scenario where you need to understand how much something has increased or decreased as a percentage.
Percentage change calculates how much a value has increased or decreased relative to its starting point. The formula is: ((New Value - Original Value) / Original Value) × 100. For example, if a stock goes from $50 to $65: ((65 - 50) / 50) × 100 = 30% increase.
This metric is essential in business, finance, economics, and statistics because it puts changes in context. A $10 increase means something very different for a $20 item (50% increase) versus a $1,000 item (1% increase).
Revenue Growth: If quarterly revenue grew from $2 million to $2.5 million, that's a 25% increase. This percentage growth rate is more meaningful than the dollar amount alone because it can be compared across different company sizes and time periods.
Customer Metrics: When analyzing customer acquisition, a growth from 1,000 to 1,500 customers represents a 50% increase. Tracking these percentage changes over time reveals trends and helps predict future growth.
Expense Analysis: If marketing costs increased from $50,000 to $62,000, that's a 24% increase. Understanding whether this matches revenue growth helps evaluate marketing efficiency.
Stock performance is always measured in percentage terms. If you bought a stock at $100 and it's now $112, you have a 12% gain. Percentage returns allow comparing different investments fairly, regardless of initial price.
Portfolio performance tracks percentage changes over time. A 7% annual return on $10,000 yields $700 in year one, but that same 7% on the new $10,700 balance yields $749 in year two—this compound growth is why percentage returns matter.
Positive percentages indicate increases or growth. Negative percentages show decreases or declines. A result of zero means no change occurred between the two values.
Large percentage changes can occur with small absolute numbers. Going from 2 to 4 is a 100% increase, but it's only 2 units. Always consider both the percentage and absolute change for full context.