Presumptive taxation under 44ad

if you file Return under Presumptive taxation (ITR4) then you have to show Business income(Profit) at least 8% of Total turnover(6% in case Transactions are made other than cash) and no need to maintain Books of accounts.. but Presumptive scheme indirectly says that Business profit or 8% of total turnover which ever is high should declare as Profit in ITR 4 so understand the concept and go through that