When they say you will expect to lose 60% do they mean for your highest weight, or of what you have left to lose between where you are and your ideal weight be at the time of surgery?

I think it's 60%, on average, of the excess weight you have beyond what a normal weight is for you.

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So, when I weighed in at my surgeon's office I was 271. I now weigh 155. I'm 5'3". Per BMI tables, my highest potential weight, without being overweight, would be about 140. So, my excess weight would have been 131 pounds. Of that 131 pounds, I have lost 116 pounds, which is 82.8% of my excess body weight. Looking at older pictures, I probably was over 300 pounds in 2015, but I didn't get on scales then.

It’s the % from what you weigh now and what you ideally weigh according to weight chart. Remember that this an average- nothing says you can’t obliterate the average ! I’ve lost more than what was expected