On the food label for a package of crackers, what does a 15 percent daily value for iron mean? one cracker provides 15 percent of the iron you need each meal. the entire package of crackers provides 15 percent of the iron that the average person needs each day. the entire package of crackers is made up of 15 percent iron. one serving of the crackers provides 15 percent of the iron that the average person needs each day.