How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Chance in playoffs100.0*Average seed
Witchey 98.4 Nightmares 84.6 +28.5
+0.9
Jones 121 Tom Brady 63.3 -1.9
-0.1
New York 119.9 Jack 109.1 -1.2
-0.1
Hirth 117.8 El-Hayek 100.2 +0.7
+0.1
Week of 11/25100.0*Chance in playoffs100.0*Average seed
Sexton 93.5 Witchey 106 +22.1
+0.5
Tom Brady 91.8 New York 96.3 -4.3
-0.1
Nightmares 63.1 Jack 136.2 +4.3
+0.1
El-Hayek 114.1 Jones 90.5 -2.7
Hirth 38.9 Ohio 87.2 +0.1
If winner is:HomeTieAway
Week of 12/2100.0*Chance in playoffs100.0*Average seed
Jack vs Witchey-18.7InIn
-0.6+0.6+0.6
Nightmares vs Tom Brady+15.5-15.2-15.2
+0.2-0.2-0.2
El-Hayek vs New York+7.6In-8.0
+0.1+0.2-0.1
Jones vs Ohio+6.7+6.7-6.8
-0.2+0.3+0.2
Sexton vs Hirth-1.8+1.7+1.8
+0.3+0.2-0.3

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs12345678910Count
71-0-0In2550258,909,693
6.50-0-1In245025180,441
60-1-062.9%01944378,909,406
Total:81.6%1334341817,999,540
Games Above .500
Chance Will Make Playoffs