A daily value of 10% means that whatever that food is you are eating satisfies 10% of your body's needs in that certain area. So for example if I'm looking at a label for yogurt and it says under sugar that it is 10% of my daily value of fats, then I know that it satisfies 10% of my body's need for fats that day. Daily values are based on a 2000 calorie diet.
