Answer:
70%
Explanation:
We can model percentage problems using the ratios:
is / of = % / 100.
We're essentially asking 14 "is" what percent "of" 20? Thus, 14 is the "is" value and 20 is the "of" value. Plugging these in will allow us to find the percentage:
14 / 20 = % / 100
7/10 = % / 100
70 = %
Thus, of the movies Deandre watched, he rated 70% of them as very good.