Determine the change in price of popcorn.
[tex]\begin{gathered} \Delta P=5.50-3.75 \\ =1.75 \end{gathered}[/tex]Determine the percent change in price of popcorn.
[tex]\begin{gathered} \frac{1.75}{3.75}\times100=0.4666\cdot100 \\ =46.66 \\ \approx47 \end{gathered}[/tex]So answer is 47%.