On the diary page below where you put your foods eaten for the day, you will find the calorie summary box. By clicking on the gear icon on the top right of the box, you will get an expanded version of the calorie summary section. At the bottom right you will see the dynamic macronutrient targets area depicted below.
At the very bottom of this section, you will see the option to select ‘Total Carbs” or “Net Carbs”. This selection will be the carbohydrate percentage format that is depicted on the blue carbohydrate macronutrient bar.