He says 200. But like any conversation about “walking around weight”, it’s not very meaningful or specific.
UFC 232 he weighed 188 on fight night, which was an average weight gain after weigh-ins. Almost exactly mean average, actually. Maybe he gained “walking around weight” after his decision to move to 170, maybe not.
More likely is he already had, and that’s why he missed weight on his last LW bout. Most fighters gain weight as they get older. A Silva was ranked #1 at 170 for a brief period before he moved up to 185.
So how did he manage it? The same way as everyone else. Felder is huge and has been pretty blunt about his challenges of making 155.
It sucks for those few guys who are too big for 155 and too small for 170, but the alternative of having 32 weight classes like boxing (I exaggerate for effect) is not a great solution either.