How are these numbers calculated?

Big Games

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

Week of 11/10100.0*Chance in playoffs100.0*Average seed
Jay 80.7 Paul 84.7 -0.6
-0.7
Craig 147.4 Scott 134.7 +0.3
-0.1
Ruth 79.7 Jeremy 128.2 +0.1
+0.1
Michael 95.2 Stacy 65.9 +0.1
+0.1
Josh 112.9 Gabby 96.1 -0.1
Week of 11/17100.0*Chance in playoffs100.0*Average seed
Stacy 57.9 Jay 88 +0.8
Ruth 99 Michael 117.6 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Michael 126.6 Jay 108.4 -0.5
Josh 93.5 Ruth 94.9 -0.2
Games Above .500
Chance Will Make Playoffs