I don't understand this question.Did the stock increase or decrease in value over the last month? By how much?

SOLUTION
Looking at the previous month's balance we can see 147.87 and the last month, the balance is 146.64
So the stock value decreased
And it decreased by 147.87 - 146.64 = 1.23
So it decreased by 1.23
Percent decrease can be calculated as follows
[tex]\begin{gathered} \text{Percent decrease = }\frac{\text{decrease}}{\text{original value }}\times\frac{100}{1} \\ \\ \text{Percent decrease = }\frac{1.23}{\text{147.87 }}\times\frac{100}{1} \\ \\ \text{Percentage decrease = 0.83\%} \end{gathered}[/tex]