Study the following graph to answer these questions.
The following bar graph shows the revenue generated by three realty firms A, B and C during 2012 to 2016. Each of these firms builds Low Income Group (LIG) apartments, Middle Income Group (MIG) apartments and High Income Group (HIG) apartments.
In the year 2014 the firms B, A and C invested ₹2011 crore, ₹1600 crore and ₹2300 crore respectively. The difference between maximum and minimum profit per cent in 2014 is ...........