The key rule for weight loss is the caloric deficit, which simply means expending more calories than you consume in order to reduce the amount of fat in your body.
The most important thing is to know your daily energy requirements, but for that we've already done a superbly detailed article on the subject here.
To set up a diet based on your objectives, calculating what you consume helps optimize your results. In bodybuilding, when you're drying out, the aim is to reduce the number of calories you consume per day.
The Team Superset Nutrition team responds to this problem and stimulates your fat loss with its low-calorie, sugar-free, fat-free and gluten-free (except for the Yummy Zero Syrup caramel flavor).