If you notices, then they have quoted total calories and fat quantity. When you eat some food, you get energy( or even excess energy) from it. If i eat a boiled potato and you eat the same boiled potato with some butter added for taste then my table will be something like Potato (430 Cal) 0 gram fat and yours will be like Potato(430 Cal) and 10 gm fat (100 calories). so you need to walk longer to spend it. Its not only fat that has calories, sugars, alcohol, carbohydrates all have calories
