How are these numbers calculated?

Big Games

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

Week of 9/11100.0*Chance in playoffs100.0*Chowder Cup100.0*Average seed
Dinosaurs 4 ThornyDevils 1 In
+22.1
+1.7
OrangeCrush 0 Hogs 1 +0.8
-0.8
+0.3
AngryHammers 3 OldSchool 6 +0.3
-4.6
-0.0
Week of 9/12100.0*Chance in playoffs100.0*Chowder Cup100.0*Average seed
Dinosaurs 5 Hogs 4 +43.4
+1.1
Grizzlies 6 OldSchool 4 +11.3
+0.0
Points
Chance Will Make Playoffs