Re: Working out calorie intake?
Obviously the bigger you are the easier it will be to lose weight (physiologically speaking of course). Studies show best target to retain muscle is 0.7% of bodyweight per week. You can do up to 1% though if you don’t mind losing a little muscle.
Calories will be specific to you unless you are counting correctly (ie weighing your food) then you are best off just eating around the same foods every day and doing weekly weigh ins. If you’ve not lost weight just decrease what you eat slightly like a sandwich per day for example.
If you are weighing food google for the Harris Benedict formula. It will give you a rough starting point and then you can tailor from there.
Best of luck bud.