Cleveland Browns : biggest year-to-year improvement/decline

Based on regular season win percentage:

                            Change in 
                              win %
Improvement: 2017 -> 2018     0.469   (0.000 -> 0.469)
Decline:     2023 -> 2024    -0.471   (0.647 -> 0.176)
Last Year:   2024 -> 2025     0.118   (0.176 -> 0.294)