date sales prev_sales diff\n 01/02/2013 459417 454904 4513\n01/03/2013 617382 459417 157965\n 01/04/2013 682274 617382 64892\n 01/05/2013 763242 682274 80968\n 01/06/2013 795597 763242 32355\n 01/07/2013 855922 795597 60325\n 01/08/2013 766761 855922 -89161\n 01/09/2013 689907 766761 -768540\n 01/10/2013 656587 689907 -33320\n 01/11/2013 692643 656587 36056\n
add margin column with 30% from  Sales values,show as table layout.