How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance in playoffs100.0*Average seed
Tom H 81.9 Shara 100.3 -14.7
-0.5
Laurel 104.68 Ethan 100.76 -5.8
-0.1
Jenn 121.52 Dave 114.46 -4.5
-0.1
Justin 73 Riley 130.16 +1.2
+0.3
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Jenn 100.28 Tom K 107.62 -15.2
-0.2
Justin 80.66 Laurel 101.48 +11.6
+1.0
Erica 104.54 Tom H 64.7 -9.1
-0.2
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Tom H vs LaurelInOut
+3.4-2.6

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-0In10012,912,819
60-1Out10017,287,397
Total:42.8%435730,200,216
Games Above .500
Chance Will Make Playoffs