They have lost 93 games in total since he left. Home and away.
His whole time at Utd they lost 92 games just at home, split between 64 in the premier league, 29 in Division 1.
He lost 238 league games in total meaning he lost 23% of all games home and away.
However just taking premier league in to account (because it took him a few years to get going) They lost 168 games, this equates to a figure of losing only 10% of their games.