To calculate this divide a food or drinks calories from fat by total calories this information is on the products food label and then multiply by 100. For example if the food has 260 calories in a serving and 306 calories from fat then your equation might look like 306 260 01176. Calculator by entering in the calories and fat for any given food product and see exactly what percentage of fat is in the product.
Divide Fat Calories by Total Calories.
For example if the food has 260 calories in a serving and 306 calories from fat then your equation might look like 306 260 01176. Read nutrition labels on food packages. When you eat out you wont be able to get the information you need from Nutrition Facts labels. I know that only a certain amount of your calories should come from fat but how do you calculate that percentage.