How are these numbers calculated?

Big Games

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

Week of 11/16100.0*Chance in playoffs100.0*Average seed
David 76.82 Jon 66.28 +23.8
+1.6
Justin 72.22 Bhairav 74.1 +2.4
+0.1
Jesse 78.46 Jeffrey 69.18 +2.2
+0.1
Adam 93.22 Jack 58.24 -1.8
-0.1
Tony 109.48 Simon 52.34 +1.1
Anand 76.6 Bryan 32.7 +0.8
Tom 100.32 Ziyi 45 -0.5
Week of 11/23100.0*Chance in playoffs100.0*Average seed
Anand 99.1 David 97.14 -18.7
-1.4
Jack 63.56 Justin 110.76 -1.7
-0.2
Simon 68.28 Bhairav 97 +1.5
+0.1
Ziyi 100.82 Tony 83.04 -1.3
Jeffrey 112.96 Tom 86.92 -0.4
Jon 73.62 Adam 58.82 +0.4
+0.1
Bryan 67.9 Jesse 59.88 -0.3
+0.1
If winner is:HomeAway
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Jesse vs David-31.3+31.3
-1.8+1.8
Tom vs Bryan-6.9+6.9
-0.2+0.2
Tony vs Jeffrey+6.2-6.2
Adam vs Anand-2.8+2.8
-0.1+0.1
Justin vs Jon+2.4-2.4
Ziyi vs Simon-0.5+0.5
-0.2+0.2

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011121314Count
71-099.8%183930112010,284,584
60-137.3211242822102010,287,756
Total:68.6%919161113141151020,572,340
Games Above .500
Chance Will Make Playoffs