How do you calculate the percent of daily calories coming from protein for a given food item?

• A. Multiply grams of protein by 9 to get calories from protein; divide by total calories; multiply by 100.
• B. Divide total calories by grams of protein; multiply by 100.
• C. Multiply grams of protein by 4 to get calories from protein; divide by total calories; multiply by 100.
• D. Add grams of protein to total calories; divide by 100.

Answer: (C)