Game Completion Rate Bug

Hello

My account says I have a game completion rate of 83%. A few weeks ago it it said 97%. It is rare that I do not complete a game. Only when internet goes out, or there is some other technical problem. I believe it is impossible that I have an 83% game completion rate. Is this a bug?

#1 @MeanPawnPapa
Aborting games will also count against your completion rate.

The completion rate is only for the last 30 or so losses, meaning if you recently didn't complete a few games, it will go way down. But it will go back up if you complete all games for a while.