How are these numbers calculated?

Big Games

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

Week of 8/11100.0*Chance in playoffs100.0*Chowder Cup100.0*Average seed
Lightning 2 RustyBlades 1 +25.5
+0.3
+0.6
PWS 1 SilverBullets 6 +9.2
No
+0.1
DudleyAvalanche 5 FlatPennyBarGrille 5 +1.7
+0.2
+0.1
Week of 8/18100.0*Chance in playoffs100.0*Chowder Cup100.0*Average seed
Lightning 0 Local1156 1 -16.3
-0.8
PWS 2 RustyBlades 8 In
-0.0
SilverBullets 1 FlatPennyBarGrille 3 -10.0
-0.3
Week of 8/25None
Points
Chance Will Make Playoffs