It could be deactivated accounts that finally dropped off.
Yeah, I did see one in my list. Maybe that means I get a couple more watchers and I'll get actual change. D:
DeviantART doesn't inform you when someone removes you from their watch.
Yes, and that would be fine, but I find it rather odd that for every new watcher, there's only the same amount. If I'm losing a lot of watchers I would expect that to show with at least a smaller number. It's been this way for months. It's bizarre.
Maybe it's a bug with DA, who knows. O.o I won't even think about my watchers because some are 13 years old accounts and who knows how much of them are deactivated already or forgotten ect. xD So the number is sooooooooooooo inaccurate about active watchers.