Oh that worries me because I will be filing MI 4884 soon.
For comparison you could use the Michigan Department of Treasury websites " 2025 Retirement and Pension Estimator" as a double check. You don't have to put in your actual birthday but you want the birth year correct.
In my case it matches turbo tax. If yours matches turbo tax that would be good backup to have if the letter gives you a way to respond to their change.
