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
Alex 106.5 Brett 86 -6.5
-0.6
Andrew 137.5 Brian 94.6 +2.1
+0.1
Jordan 87.1 Cary 99.2 +0.9
Houston 128.8 Tron 105.6 -0.1
If winner is:HomeAway
Week of 11/17100.0*Chance in playoffs100.0*Average seed
Cary vs Brett-11.3+11.3
-0.8+0.8
Brian vs Houston-3.0+3.0
-0.2+0.2
Tron vs Jordan+2.7-2.7
+0.1-0.1

What If

Chances based on how well the Brett finish out the regular season.   Explain

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
93-0In38621,930,888
82-1In490245,780,033
71-292.1%50142260005,785,017
60-323.72223137801,930,802
Total:87.5%6601201651015,426,740
Games Above .500
Chance Will Make Playoffs