How do you figure your excess body weight?

I am confused.... How do you figure what your excess body weight is....is it the difference between your goal weight and what you weighed before surgery... Is 75% of your goal weight 75% of your presurgery weight... I have heard som many different opinion on this....I think I am going crazy trying to figure it out. Please help.. Betty Myers OPEN RNY 5/25/04 -125 pounds

Excess body weight is the difference between your goal weight and your current (or pre-surgery in our case) weight. My starting weight was 352. My goal weight is 150. My EXCESS body weight was 202 lbs. If I were to lose 75% of my excess weight, I would lose 150ish lbs and weigh around 200. I hope this helps! Pamela 352/241/150 -110