How are these numbers calculated?

Big Games

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

Week of 10/22100.0*Chance in playoffs100.0*Average seed
Shafters 1 Broomsday 2 -26.3
-0.4
Sunny 8 Broomshakalaka 2 +15.1
+0.3
Defectors 5 Blades 1 +1.9
+0.1
Week of 10/29100.0*Chance in playoffs100.0*Average seed
Sunny 4 Blades 1 In
+0.5
Shafters 2 Defectors 4 +0.1
+0.2
Broomsday 2 Broomshakalaka 2 +0.1
+0.1
Week of 11/5100.0*Chance in playoffs100.0*Average seed
Sunny 8 Shafters 3 +0.2
Broomsday 2 Defectors 4 +0.0
Points
Chance Will Make Playoffs