Step 1
Define Percentage increase
[tex]=\frac{final\text{ amount - intial amount}}{in\text{itial amount }}\times100[/tex]Final amount = 43 miles
Initial amount = 34 miles
Therefore, the percentage increase is given as
[tex]\begin{gathered} \frac{43-34}{34}\times100 \\ =\text{ }\frac{9}{34}\times100 \\ =26.4706percent^{} \end{gathered}[/tex]To the nearest whole number the percent decrease = 26%