1. What is Percentage Increase?

Percentage increase measures how much a value (in this case, stock price) has grown relative to its original value. It's a fundamental metric in finance to evaluate investment performance.

2. How Does the Calculator Work?

The calculator uses the percentage increase formula:

Where:

• New Price — Current price of the stock
• Old Price — Original purchase price or previous price

Explanation: The formula calculates the difference between new and old price, divides by the original price, then converts to percentage by multiplying by 100.

3. Importance of Percentage Calculation

Details: Percentage increase helps investors evaluate stock performance, compare different investments, and make informed buying/selling decisions.

4. Using the Calculator

Tips: Enter both old and new prices in USD. Both values must be positive numbers. The calculator will show the percentage increase (or decrease if negative).

5. Frequently Asked Questions (FAQ)

Q1: What does a negative percentage mean?
A: A negative result indicates a percentage decrease rather than increase - the stock price has gone down.

Q2: How is this different from percentage points?
A: Percentage increase is relative to the original value, while percentage points measure absolute difference between percentages.

Q3: Should I include dividends in the calculation?
A: For total return calculations, yes. This calculator only measures price appreciation.

Q4: What time period should I use?
A: The calculator works for any time period - daily, monthly, yearly, or since purchase.

Q5: How accurate is this for volatile stocks?
A: The calculation is mathematically precise, but doesn't account for volatility - just the start and end points.