How are these numbers calculated?

Big Games

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

Week of 11/27100.0*Chance in playoffs100.0*Average seed
Ann 107.92 Buf 100.38 In
+0.1
Dra 98.38 Sam 98.07 In
+0.6
Nin 85.69 jos 91.67 +1.3
Jol 119.49 rem 102.87 +0.1
Won 128.58 Exp 128.37 -0.1
Week of 12/4100.0*Chance in playoffs100.0*Average seed
Dra 90.97 jos 126.13 -0.8
Buf 109.74 rem 83.8 +0.2
Games Above .500
Chance Will Make Playoffs