Number per servings per package is useful when planning the weekly shopping list or family meals and subsequently deciding how much to buy.
The per 100g column enables you to easily compare the nutritional content of similar products.
The serving size in common household measurement helps you to know how much is usually eaten.
The nutrients listed are especially useful for health conscious consumers. They can also be read by people on special diets. Knowing the nutrient content of food can help them plan their meals better.