How are these numbers calculated?

Big Games

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

Week of 8/18100.0*Chance in playoffs100.0*Average seed
NEProgeny 3 ShrewsburyRangers 5 -38.3
-0.6
OrangeCrush 1 RubberPuckies 4 -12.6
-0.1
Week of 8/23100.0*Chance in playoffs100.0*Average seed
Thunder 5 NEProgeny 0 Out
-0.3
Week of 8/31None
Points
Chance Will Make Playoffs