How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 9/10100.0*Chance in playoffs100.0*Average seed
Doncaster 24 Newcastle 28 +2.9
-0.1
Keighley 28 Workington 6 Out
-0.6
Week of 9/17None

What If

Chances based on how well the Workington finish out the regular season.   Explain

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsChampionship12345678Count
73-80OutNo100442,501,472*
Total:OutNo100442,501,472

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs