Different Nutrition Facts

this is the nutritional info for brocolli that i found
http://www.livestrong.com/thedailyplate/nutrition-calories/food/generic/broccoli/

but on the bag that i buy it says for 85grams, 30cal, 0 fat, 4 carbs, 2 g fiber, no protein.

what gives? why is it different? ive also noticed this about chicken breast also. what should i go by?

For anything that has a label on the product container, use that.

With broccoli, some of us don’t even count it. It is that good for you.

there’s different facts for fresh, frozen and cooked because of the effects of cooking on nutritional content and serving size
(# of grams), and some sites/labels will not tell you if it is for cooked or fresh/frozen

for example with chicken breast it will lose water when being baked which will decrease the mass of the serving