My completion percentage is usually somewhere between 80% - 90%. As of this post, I'm at 86.9%. I only complete DLCs for games that I care about and/or are worth the time spent on them. So highly unlikely I will put in the countless hours required for the Uncharted 2 and 3 DLC trophies.
So many other things to do in real life, too many other games to play, along with new games coming out all the time, and so little time for truly consistent and intensive playing.