As a general rule, between 10 percent and 15 percent of your total calories should come from protein. So, if you consume 2,000 calories per day, at least 200 should come from protein, or about 50 grams. You should try to eat around one gram of protein per one kilogram of body weight, or around 0.4 grams per pound.An easier way to figure this out in your head is to take your weight, divide it in half, and subtract 10.onsuming 60 percent of your total calories from carbohydrates equates to 1,200 calories a day based on a 2,000 calorie diet. Below is an easy-to-understand explanation of how carbohydrates impact the human body and the degree to which we need them (or not) in our diet.