60%
Through the 2010 season, it's the Chicago Bears. They have a record of 704-512-42 for a winning percentage of .579.
50%
Including the playoffs, he is 53-57 as of today.
The Cleveland Brown's all time historical winning percentage was .535 which has topped the franchise's winning record and is high against other NFL teams.
He played professional basketball with the Chicago Bulls,winning 6 championships in a decade
500
Indiana (.657)
Babe Ruth!
currently 1. thunder 80.6 winning percentage 2.bulle 78.9 winning percentage 3. heat 77.8 winning percentage 4.spurs 69.4 winning percentage 5. pacers 64.7 winning percentage
According to the Pro Football Hall of Fame, as of the start of the 2007 season the team with the best all time regular season winning percentage was the Miami Dolphins whose all time regular season record was 368-252-4 for a winning percentage of .593. Second was the Chicago Bears with an all time regular season record of 670-482-42 for a winning percentage of .579.
Since 1970, the Bengals have a total record (regular season and playoffs) of 293-369 for a .440 winning percentage. This ties them for 26th with the Cleveland Browns. Only the Saints (.436 winning percentage), Cardinals (.411), Buccaneers (.403), Lions (.400), and Texans (.362) have a lower winning percentage.