On the pakages of boneless skinless chicken breast i buy and eat it says that 3oz cooked has 100 calories but on fitday it says somethin more in the range of 130-140. Which should I believe? I have come across a few items like this also such as white fish which i also eat a lot.

If I am mis calculating calories it could be slightly detrimental especially if I count things lower than they are now since i am bulking and dont want to over do it.