cost of the framed print = $49.50
selling price = $45.00
decrease = 49.50 - 45.00 = $4.5
Therefore,
[tex]\begin{gathered} \text{percentage decrease=}\frac{\text{decrease}}{\cos t\text{ price}}\times100 \\ \text{percentage decrease = }\frac{4.5}{49.50}\times100 \\ \text{percentage decrease = }\frac{450}{49.50} \\ \text{percentage decrease =}9.09090909091 \\ 9.09090909091\approx9.1\text{\%} \end{gathered}[/tex]