How are these numbers calculated?

Big Games

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

Week of 8/22100.0*Chance in playoffs100.0*Chowder Cup100.0*Average seed
IceDogs 2 ThirstyTurtles 4 In
+23.0
+1.6
DiveBarDown 4 UnionTavern 2 +0.3
-4.8
+0.0
ElderSkatesmen 3 DiveBarDown 2 +28.5
+0.2
Eagles 2 ThirstyTurtles 4 +20.1
+0.5
Week of 8/29None
Points
Chance Will Make Playoffs