A company's revenue increased by 10% in the first quarter and decreased by 5% in the second quarter. What is the net percentage increase or decrease in revenue over these two quarters?

Correct option is C

Given:
Increase in first quarter = 10%
Decrease in second quarter = 5%
Net Percentage Change = ?
Formula Used:
Net Percentage Change =$$a + b + \frac{a \cdot b}{100}$$​​
where a and b are the percentage changes.
Solution:
​$$\text{Net Percentage Change} = 10 - 5 + \frac{10 \cdot (-5)}{100}\\= 5 - 0.5 = 4.5\%$$​​
The net percentage increase in revenue is 4.5%.