Let us get the difference in the price of the microwave oven
[tex]\begin{gathered} price\text{ difference=\$187.50-\$150.00} \\ \text{price difference=\$37.50} \end{gathered}[/tex]Let us get the percentage decrease in price
[tex]\begin{gathered} \frac{\text{price difference}}{Actual\text{ price}}\times100\text{ \%} \\ \\ \text{where Actual price=\$187.50} \end{gathered}[/tex][tex]\begin{gathered} \text{ }\frac{\text{\$37.50}}{\text{ \$187.50}}\times100\text{ \%} \\ =\frac{3750\text{ \%}}{187.50}=20\text{ \%} \end{gathered}[/tex]Hence, the percentage decrease is 20%.
