The given bar graph represents the sales of automobiles (in ₹ crores) by five companies A, B, C, D and E in the years 2007-2008 and 2008-2009.
Study the bar graph and answer the question that follows.

(Note : The data shown below is only for mathematical exercise. It does not represent the actual figures of the companies)

What is the percentage difference (correct to two places of decimals) of the combined sales of the
five companies in 2008-2009 compared to the combined sales of the five companies in 2007-2008?