Das ist die Formel die ich habe
Habe sie von Javascript und Python in C# umgeschrieben

public static string _Regerneration(double votepower)
{
if (votepower > 100)
{
votepower = votepower / 100;
}
double rest = 100.00 - votepower;

        int t2 = (int)((rest * 100) * 4320) / 100;

        TimeSpan span = new TimeSpan(0, 0, t2);
        int normalizedDay = span.Days;
        int normalizedHours = span.Hours;
        int normalizedMinutes = span.Minutes;

        string back = (normalizedDay + " Tage " + normalizedHours +  " Stunden " + normalizedMinutes  + " Minuten ");

        return back;
    }