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
Laurel 94.74 Jenn 97.14 Out
Shara 71.8 Tom H 63.14 Out
-0.4
Tom K 52.98 Riley 68.8 Out
+0.1
Dave 93.34 Eric 88.58 -0.1
If winner is:HomeAway
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Dave vs Tom H-0.3+0.3
Justin vs Tom K+0.2-0.2

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
42-0Out2754194,177,820
31-1Out23778,353,496
20-2Out1004,181,820
Total:Out7256816,713,136
Games Above .500
Chance Will Make Playoffs