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
Bri 79.52 Luc 85.4 Out
-0.7
Nin 85.69 jos 91.67 +1.6
Ann 107.92 Buf 100.38 +0.5
-0.1
Week of 12/4100.0*Chance in playoffs100.0*Average seed
Bri 32.71 Sam 125.51 -0.4
Ann 84.95 Luc 105.8 -0.1
Buf 109.74 rem 83.8 -0.1
Games Above .500
Chance Will Make Playoffs