2018 Cayley Problem 7

At 8:00 a.m., there were 24 cars in a parking lot. At 9:00 a.m., there were 48 cars in the same parking lot. What is the percentage increase in number of cars in the parking lot between 8:00 a.m. and 9:00 a.m.?

\textbf{(A)}\ 20\%\quad \textbf{(B)}\ 48\%\quad \textbf{(C)}\ 72\%\quad \textbf{(D)}\ 100\%\quad \textbf{(E)}\ 124\%

If there are no answer choices shown, enter a numerical answer.

Full credit to this problem is given to the CEMC, you may view all Cayley contests here.