The question can be written as:

x/100 * 50 = 38

multiplying

50x/100 = 38

cross multiplying

50x=38(100)

multiplying

50x=3800

dividing

x=3800/50

So

x=76

So 38/50 is 76%

x/100 * 50 = 38

multiplying

50x/100 = 38

cross multiplying

50x=38(100)

multiplying

50x=3800

dividing

x=3800/50

So

x=76

So 38/50 is 76%