The credit card and a global payment processing companies have been suffering losses for some time now. A well known company recently announced its quarterly results. According to the results, the revenue fell to $48.0 billion from $69.0 billion, a year ago. By what percent did the revenue fall?  Select
A) 20.8	B) 30.4	C) 31.8	D) 32.5	E) 33.8

Rationale: "$ 69 - $ 48 = 21 $ ( 21 / 69 ) * 100 = 30.434 % answer : b"
Answer: B