Which  2016 best winning percentage in team history was  2017 Los Angeles Dodgers season behind 
2017 Los Angeles Dodgers season:  They finished the season with the most wins in Los Angeles team history with a major league best 104 wins (2nd best in overall team history, tied with the 1942 team and behind only the 1953 Brooklyn Dodgers). 1953 Brooklyn Dodgers season: The 1953 Brooklyn Dodgers repeated as National League champions by posting a 105–49 record, as of 2016 the best winning percentage in team history.
The 1953 Brooklyn Dodgers