Answer
Percent Increase = 8%
Explanation
Percentage Increase is given as
[tex]\text{Percent Increase = }\frac{(New\text{ value) - (Old value)}}{Old\text{ value}}\times100\text{ percent}[/tex]New value = 270 dollars
Old value = 250 dollars
[tex]\begin{gathered} \text{Percent Increase = }\frac{270-250}{250}\times100\text{ percent} \\ \text{Percent Increase = }\frac{20}{250}\times100 \\ =8\text{ percent} \end{gathered}[/tex]Hope this Helps!!!