How are these numbers calculated?

Big Games

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

Week of 11/27100.0*Chance in playoffs100.0*Average seed
STEVE 131 ALEX 127.5 +7.6
+0.8
STANEK 92.5 KNIGHT 87.5 +2.1
STEWART 109.5 CASEY 85 +0.6
-0.3
BRETT 107.5 JARED 101.5 -0.1
NICK 65.5 KIRK 116 +0.0
If winner is:HomeAway
Week of 12/4100.0*Chance in playoffs100.0*Average seed
BRETT vs STEVE-18.6+13.8
-1.1+0.8
ALEX vs NICK-8.6+21.0
-0.1+0.3
CASEY vs KNIGHT+2.3-3.1
+0.1-0.1
JARED vs STEWART+0.5-3.5
+0.0-0.4
KIRK vs STANEK+0.0-0.2

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
72-052.0%104242526,930,286
61-14.75202051408,898,991
50-2Out21452862,791,044
Total:21.6%41825112894118,620,321
Games Above .500
Chance Will Make Playoffs