Every product is different; 100% of the calories in margarine, butter, shortening, cooking oil come from fat.
In each case, multiply each gram of fat by 9 calories/gm, then divide that number by total calories to find the percentage.
11
39%
30% from fat
33%
Energy in all foods comes from calories, which are in starches, fats and proteins. Peanuts contain a high percentage of fat, which is the source of most of their calories, or energy.
Depends on what it comes from. 491 calories from French fries has 24.6 grams fat, while 491 calories from apples only has 1.9 grams fat.
multiply grams of saturated fat times 9
60
70.43%
Doctors and nutritionists usually recommend that 40% of your calories come from carbohydrates, 30% from protein, and 30% from fat.
I can't give you a specific number. The American Heart Association recommends no more than 7% of calories should come from saturated fat, so I'd guesstimate around 13-23% of your calories should be from unsaturated fat. It depends on the total percentage of fat in your diet.
Strike the right balance between the calories you consume and the calories you burn.