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 +5.9
+0.7
Nin 85.69 jos 91.67 +2.4
Bri 79.52 Luc 85.4 +0.1
Week of 12/4100.0*Chance in playoffs100.0*Average seed
Ann 84.95 Luc 105.8 Out
-1.0
Won 161.26 Nin 67.35 +6.8
+0.1
Buf 109.74 rem 83.8 -5.3
-0.3
Bri 32.71 Sam 125.51 +0.0
Games Above .500
Chance Will Make Playoffs