Study the following table and answer the question.

Marks of five students (A, B, C, D and E) in four different subjects in an examination

Subject	Maths	Physics	Chemistry	Computers
Max. marks \ Students	100	70	70	70
A	90	65	58	65
B	65	54	68	55
C	84	39	45	49
D	45	48	35	38
E	55	35	62	40

What is the overall percentage of C?