To find the percentage increase in the price of the technology stock, use the following formula:

$\text{Percentage Increase} = \frac{\text{New Price} - \text{Old Price}}{\text{Old Price}} \times 100$

Plugging in the values:

$\text{Percentage Increase} = \frac{9.58 - 9.51}{9.51} \times 100 = \frac{0.07}{9.51} \times 100 \approx 0.735 \times 100 = 7.35\%$

Rounding to the nearest tenth of a percent, the percentage increase is approximately 0.7%.

Would you like more details on this calculation or have any other questions?

Here are some related questions:

1. How do you calculate percentage decrease in price?
2. If the stock price rises to $10, what would the new percentage increase be?
3. What are common factors that influence stock price changes?
4. How can you calculate the average percentage change over multiple days?
5. What other real-world scenarios can benefit from understanding percentage increase?

Tip: Always subtract the old value from the new value to avoid confusion when calculating percentage change.