Chicago Bulls biggest year-to-year improvement/decline

Based on regular season win percentage:

                            Change in 
                              win %
Improvement: 1995 -> 1996     0.305   (0.573 -> 0.878)
Decline:     1998 -> 1999    -0.496   (0.756 -> 0.260)
Last Year:   2019 -> 2020     0.070   (0.268 -> 0.338)