Find the wrong number in given series sequence.
Study the following bar graph carefully and answer the questions given below.
What is the ratio of the sales of the company in 2008-09 to the sales of the company in 2011 - 12?
What was the percentage increase in the sales of the company from 2009 - 10 to 2011 to 12?
In which of the given years was the increase/decrease in the sales compared to respective previous year the least?