How to Determine Percentages of Total Kilocalories From Carbohydrates Step 1. Total 173 kcal. From this information you can calculate the percentage of kcalories each of the energy nutrients contributes to the total.
Technically a kilocalorie is 1000 calories but the term calorie is generally used instead of kilocalorie to describe the units of energy in food or food calories.
To determine the percentage. Percentage may also be referred to as out of 100 or for every 100. 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. Fat 30.