Atlanta Falcons : biggest year-to-year improvement/decline

Based on regular season win percentage:

                            Change in 
                              win %
Improvement: 2007 -> 2008     0.438   (0.250 -> 0.688)
Decline:     1998 -> 1999    -0.562   (0.875 -> 0.313)
Last Year:   2024 -> 2025     0.000   (0.471 -> 0.471)