How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Chance in playoffs100.0*Average seed
Mike 77.06 Mark 50.3 -3.3
-1.1
Chris 79.68 Josh 104.86 -0.0
Week of 11/26100.0*Chance in playoffs100.0*Average seed
Steve 134.02 Mark 85.46 -4.6
-1.2
Chris 97.98 Sidney 112.93 +0.3
-0.0
Michael 65.68 Noah 110.78 +0.1
Josh 96.4 Russell 58.84 +0.1
+0.1
Ole 90.39 Suzie 89.46 -0.1
-0.0
If winner is:HomeAway
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Sidney vs Noah+5.5-4.7
-0.1+0.1
Josh vs Mark-1.6In
-0.4+2.1
Steve vs Carlos-0.9+7.2
-0.1+0.5
Michael vs Ole+3.2-1.9
+0.4-0.2
Chris vs Russell-3.6+1.2
+0.3-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
81-0In503314315,497,527
70-190.6%151833349175,806,673
Total:92.2%9101727287191,304,200
Games Above .500
Chance Will Make Playoffs