Tennessee Titans : biggest year-to-year improvement/decline

Based on regular season win percentage:

                            Change in 
                              win %
Improvement: 1966 -> 1967     0.465   (0.214 -> 0.679)
Decline:     1993 -> 1994    -0.625   (0.750 -> 0.125)
Last Year:   2024 -> 2025     0.000   (0.176 -> 0.176)