Through the 2010 season, it's the Chicago Bears. They have a record of 704-512-42 for a winning percentage of .579.
49ers
Steelers
New York Giants!!!
Pittsburgh Steelers
42
The New England Patriots have the best win percent since 2011, with a 3 season average winning percentage of .771.
85%
the colts have the highest winning precentage
Carolina Panthers, 6-3 for a .667 winning percentage.
The top winning percentage of the 1980s in the NFL was the San Francisco 49ers. They won 68.4% of their regular season games. 2nd was the Washington Redskins at 63.8%.
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packers