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 -15.1
+0.8
-0.1
DudleyAvalanche 5 FlatPennyBarGrille 5 -8.7
No
-0.2
PWS 1 SilverBullets 6 +2.2
No
+0.1
Week of 8/18100.0*Chance in playoffs100.0*Chowder Cup100.0*Average seed
PWS 2 RustyBlades 8 In
+0.3
SilverBullets 1 FlatPennyBarGrille 3 In
+1.3
Lightning 0 Local1156 1 +2.5
+0.1
Week of 8/25None
Points
Chance Will Make Playoffs