How are these numbers calculated?

Big Games

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

Week of 11/3100.0*Chance in playoffs100.0*Average seed
Alter 102.6 Keating 100.9 -9.0
-0.4
Shroff 86.3 Petrella 87.6 -3.2
-0.1
Larson 114.3 Illgen 130 -2.4
-0.2
Del Cueto 126.6 Brockett 94.7 +1.2
Swords 149.9 Mendoza 88.5 +1.2
+0.1
Swikart 123.1 Cohen 80.8 +1.0
If winner is:HomeAway
Week of 11/10100.0*Chance in playoffs100.0*Average seed
Keating vs Swikart+14.4-14.4
+0.5-0.5
Petrella vs Del Cueto-4.9+4.9
-0.1+0.1
Mendoza vs Shroff-4.6+4.6
-0.1+0.1
Illgen vs Alter-3.4+3.4
-0.2+0.2
Cohen vs Larson-0.5+0.5
Brockett vs Swords-0.5+0.5

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
94-0100.0%881210483,531
83-198.446381521,925,079
72-279.89264520002,889,592
61-332.0032959901,928,438
50-42.83454210481,688
Total:68.9%20212826517,708,328
Games Above .500
Chance Will Make Playoffs