Kindly solve this question:

Dear Student
Here ,we draw bar graph equal to 100% for each year .

Subject	Number of students (2011-12)	% (2011-12)	Number of students (2012-13)	% (2012-13)
Statistics	25	25	30	30
Economics	40	40	42	42
History	35	35	28	28
		100		100

Graphical representation is better or more exact on graph paper.

Regards