the selling price is 25.60, the cost was 16.9, that means 25.6 - 16.9 = 8.7, so the item's price has been bumped up by 8.7 bucks, which is the markup, how much is that of 25.6?
worded differently, if we take 16.9(cost) to be the 100%, what is 8.7 off of it in percentage?
