On December 13-14, 2018, we've removed spam subscribers from all the channels and hence you see a noticeable decrease in your sub count. More info here: https://goo.gl/pGubnn . Hope this clarifies.
@TeamYouTube
Hello Youtube Team
On My Channel My Subscribers Why Show Decrease.
What Is The Problem Please Check This Problem As Soon As Possiblehttps://www.youtube.com/channel/UCrQZXHKjyAAk5Ddpvu-J9qw …
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Thanks. Twitter will use this to make your timeline better. UndoUndo
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