What is a 10% Goal?
Setting a goal to lose 10% of your body weight is an excellent start. At Weight Watchers, a 10% Goal acts as an achievable 'stepping stone' to your ultimate Goal Weight. Better still, losing 10% of your body weight may bring some desirable health benefits, such as a decreased risk of diabetes and improved feelings of well-being
from ww website.
You have lost 10% of what you need to loose but not 10% of your body weight? Does this make sense. You can check this on WW website on assessment part at the top.
My start weight is 16 10 and to get my 10% i need to be 15 1.
Hope this helps and I think when you achieve your 10 % you get a key ring.