Instead of multiplying a number by 5, the number is divided by 5. What is the percentage of error obtained ? Choose the most appropriate option.
A) 98 %
B) 97 %
C) 96 %
D) 99 %
E) 95 %

Rationale: "let the number be x the right number is 5 x the wrong number is x / 5 error is ( 5 x - x / 5 ) = 24 x / 5 percentage of error is ( ( 24 x / 5 ) / 5 x ) * 100 = 96 % answer : c"
Answer: C