How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Chance in playoffs100.0*Average seed
Bjorn Identity 87.92 TightyWhiteys 128.3 -29.1
-1.2
Favre Waffle Co 81.3 CroMartie McFly 105.22 +10.8
+0.2
Baratheons Bast 82.28 You Down With J 146.86 -10.2
-0.3
E for Elite 80.82 passwordistaco 75.86 +5.8
+0.2
BieberHole69 138.8 Fuhgeddaboudit 71.68 -2.6
-0.1
Week of 11/28100.0*Chance in playoffs100.0*Average seed
Favre Waffle Co 142.22 Baratheons Bast 64.8 Out
-0.4
Bjorn Identity 145.2 Fuhgeddaboudit 83.34 +24.5
+0.9
CroMartie McFly 102.24 TightyWhiteys 156.92 -2.8
BieberHole69 137.98 passwordistaco 89.62 +0.9
+0.2
Games Above .500
Chance Will Make Playoffs