I weigh most of my deer dressed and then weigh the meat from the processor. If I haven't hit the shoulders the percentage of meat to dressed weight is just over 50%. I got back 117 lbs of meat this year and it had a bad shoulder due to an old injury. That would have pushed the total over 120lbs. That buck weighed 258 lbs on the hoof so thats 46.5% meat weight to live weight. Assuming a 215 lb dressed weight the ratio to dressed weight is 55%. That percentage might be a little high because of the size of the deer. I do get a kick out of the fact that the meat from that deer is close to the average live wieght of most deer shot.
That goodness no one hit that buck with a car. That would have been one tangled mess of iron.