Answer:
20%
Explanation:
Original Price = $45
New Price = $54
Since the new price is higher than the original price, we have a percentage increase.
Therefore:
[tex]\begin{gathered} \text{Percentage Increase=}\frac{New\text{ Price-Original Pice}}{\text{Original Price}}\times100 \\ =\frac{54-45}{45}\times100 \\ =\frac{9}{45}\times100 \\ =20\% \end{gathered}[/tex]The percent change in the price is 20%.