I usually buy chicken legs in a pack of four from the supermarket and the packet comes at 1000grams.  This would mean that each leg should be 250 grams.  I am trying to calculate how many calories are in each leg after I cook them. (I cook them on the bone without the skin in the oven)  I usually eat my chicken legs on the go so weighing them before and after I eat the meat is not an option.  I am not sure if my chicken legs would be considered small, medium or large and am trying to calculate the amount of calories I eat when I eat each chicken leg.  If anybody has any idea this would be of great help 
27% is the percentage of raw bone in a chicken leg.  Source: Bone Percentage in Raw Meaty Bones 