The salary of a worker is first increased by 25% and afterwards reduced by 25%. What is the net change in the worker's salary?
Choose one
A) 3.25 % increase B) 3.25 % decrease C) 6.25 % increase D) 6.25 % decrease E) no change

Rationale: "let x be the original salary . the final salary is 0.75 ( 1.25 x ) = 0.9375 x the answer is d ."
Answer: D