Take the percentage of each order.
0.6 x 60 =36 orders
0.25 x 60 = 15 orders
Take the sum of the orders and deduct it from the total order
60 - 51 = X
X = 9
9 represents the orders for other items. Divide 9 by 60 to get its percentage
( 9 /60 ) * 100 = 15% This is the percentage for other items.