Answer
The percent change in the price of a share is 520%.
It is a percent increase.
Work Step by Step
To find the percent change, we use the following formula:
percent change = $\frac{New\ amount\ -\ Original\ amount}{Original\ amount}$ $\times$ 100%
The original price was 24 dollars per share. The new price became 148.80 dollars per share. Substituting these values into the formula yields:
percent change = $\frac{148.80\ -\ 24}{24}$ $\times$ 100%
percent change = $\frac{124.80}{24}$ $\times$ 100%
percent change = 5.2 $\times$ 100%
percent change = 520%
Because the percent change is a positive number, it is a percent increase.