How are these numbers calculated?

Big Games

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

Week of 10/3100.0*Chance in playoffs100.0*Average seed
Salisbury 10 Bev Facey 8 +3.5
+0.2
Spruce Grove 52 Jasper Place 27 +0.8
Week of 10/10100.0*Chance in playoffs100.0*Average seed
Bellerose 14 Spruce Grove 31 -2.6
-1.0
Salisbury 21 AOB 14 +1.8
+0.1
Bev Facey 31 Harry Ainlay 28 -1.6
-0.1
Jasper Place 63 Ross Shep 10 -1.4
Week of 10/17100.0*Chance in playoffs100.0*Average seed
Bellerose 7 Jasper Place 30 -6.2
-0.9
Ross Shep 0 AOB 43 -6.2
+0.1
Spruce Grove 49 Bev Facey 6 In
+0.5
Salisbury 20 Harry Ainlay 29 In
-0.3
Games Above .500
Chance Will Make Playoffs