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
Tipps 139 Taylor 128 -0.2
-0.5
Pollard 117 Henley 144 +0.1
-0.2
Kelso 164 Drennon 198 -0.1
Smith 132 Johanson 149 +0.0
Week of 11/17100.0*Chance in playoffs100.0*Average seed
Drennon 132 Henley 140 -0.2
Taylor 100 Kelso 128 -0.1
Week of 11/24None
Games Above .500
Chance Will Make Playoffs