I went from 215 to 168, but I was doing much more than just BJJ, I was training for an amateur MMA fight.
Unfortunately wasn't able to continue training after the fight (My dad was pissed at me fighting, wouldn't give me a loan to pay for BJJ classes back in my hometown) so I've ballooned to 185. Gonna get back down to 160 by NYE, hopefully, and BJJ will be one of the workouts involved in this weight loss.