Question for those who use a scale for cooking/baking?

Do you follow the grams according to the recipe or do you follow what is on the back of your all-purpose flour bag? For example, the recipe that I want to use is stating that 2 3/4 cups of flour=360g.....,but according to my AP flour bag 2 3/4 cups= 330g. Sorry if this is a silly question, but I'm really not sure!