Check serving size first and foremost. This will help you dictate the rest of the label.
Calories: Determine the amount of energy you get from food
% DV means daily value. So the percent of your daily value in the food item is shown beside the nutrient.. For example, the footnote at the bottom shows you how much sodium someone on a 2,000 calorie diet should consume daily. Its about 2400mg. So this food item has 470mg of sodium which is 20% of the total amount of sodium you should consume in a day.
For more information go to the source: