The first thing you should do for this case is to know the result of each fraction.
We have then:
19/50 = 0.38
13/20 = 0.65
Then, to know the percentage, we must multiply this value by 100.
0.38 * 100 = 38%
0.65 * 100 = 65%
answer
the equivalent percent for each fraction are
38%
65%
respectively