Phoenix Suns biggest year-to-year improvement/decline

Based on regular season win percentage:

                            Change in 
                              win %
Improvement: 2004 -> 2005     0.402   (0.354 -> 0.756)
Decline:     2022 -> 2023    -0.231   (0.780 -> 0.549)
Last Year:   2025 -> 2026     0.110   (0.439 -> 0.549)