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
Kelso 164 Drennon 198 -2.5
-0.2
Pollard 117 Henley 144 +1.2
Smith 132 Johanson 149 +0.8
Crouch 149 Best 108 +0.6
-0.1
Week of 11/17100.0*Chance in playoffs100.0*Average seed
Drennon 132 Henley 140 +0.1
Taylor 100 Kelso 128 +0.1
Week of 11/24None
Games Above .500
Chance Will Make Playoffs