Different calorie results!

Im trying to calculate calories and macros for the first time but every app or website gives me extremely different results! I understand if its complicated food but im only calculating steaks. How do I calculate this and know if they are extremely different? Below are some examples of a 400g rib eye steak:

MyFitnessPal
Calories: 700
Protein: 52
Fat: 54

Cronometer
Calories: 1000
Protein: 106
Fat: 60

Google:
Calories 1164
Protein 96g
Fat 88g

from Bodybuilding.com Forums - Nutrition https://ift.tt/2wYUHIq