How are these numbers calculated?

Big Games

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

Week of 11/23100.0*Chance in playoffs100.0*Average seed
Zach 36 Bill 46 -24.9
-0.8
Fitz 54 Kyle 41 -3.9
-0.1
Babs 58 Jason 60 +2.6
+0.1
Brandon 60 Chris 37 +2.4
+0.1
Jake 54 Josh 45 +1.5
Daryll 69 Yarroch 54 +0.5
+0.1
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Zach 61 Yarroch 30 +11.8
+0.6
Babs 51 Daryll 76 +10.0
+0.1
Chris 64 Jason 47 -1.6
-0.1
Jake 63 Bill 34 -0.9
Fitz 53 Josh 79 -0.7
-0.0
Brandon 60 Kyle 48 +0.0
If winner is:HomeTieAway
Week of 12/7100.0*Chance in playoffs100.0*Average seed
Babs vs Zach-50.0+6.2In
-1.1+0.1+1.1
Chris vs Kyle-0.1+6.2-0.1
-0.2+0.3+0.3
Fitz vs Bill-0.9-1.0+0.7
-0.3+0.2+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs123456789101112Count
141-0-0In584233,560,935
130-0-156.4%56441,020,468
120-1-00.20326833,567,597
Total:50.2%2922163368,149,000
Games Above .500
Chance Will Make Playoffs