Popcorn Labels Popcorn Nutrition Label Question??

Popcorn nutrition label question?? - popcorn labels

I am a bit lost on a nutrition labeling of microwave popcorn. So says the special label.
Serving Size: 3 tbsp.
(31g) Unpopped, 5 v. Pop
Serving per bag, about 3

Calories: 120 (package) 20 (1 cup burst)

2 g total fat

If I eat the whole bag of popcorn to see how many calories you have eaten?

Thank you!