Hamburger nutrition before/after cooking

[klir_2m]

Hi, I just broiled up an 8 oz, 80/20 steak burger patty. The 8 oz was before cooking, surprisingly after cooking it weighed about 4 oz on my food scale. The nutrition info on the box was 570 calories per 8 oz patty. If it's 4 oz after cooking, will it have the same macros, ie 570 calories?

I'm not suggesting that the calories magically disappear... But it does seem odd that a patty would lose 50% of its weight after cooking, and 570 calories seems awful high for 4 oz of cooked meat, since 8 oz of cooked steak is about the same amount of calories.

[Starky1177]

Im not sure, but I think it changes, all the fats/juices come out

[Omn]

Just to be safe, I always go by the box. I never assume that a significant amount of fat/calories disappeared due to cooking.

I've always sided with underestimating these things.

[Forgotten18]

I'd go by the nutrition info. on the box if it's per hamburger patty. In the future, you're probably better off buying ground beef that doesn't come in a box =/