How are these numbers calculated?

Big Games

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

Week of 10/2100.0*Chance in playoffs100.0*Average seed
Gerrett 80.4 Germ 107.8 -1.9
-0.1
If winner is:HomeAway
Week of 10/9100.0*Chance in playoffs100.0*Average seed
JD vs Gerrett-1.8+4.6
-0.2+0.4
Tyler vs Beck/Cottington-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
99-099.6%88471000000005,161
88-173.91920109876654338,072
77-257.04314131211109876579,383
66-348.0001213121111109886455,803
55-439.89101010111110101091,654,548
44-531.977891011111212123,959,066
33-624.75578910121315176,235,052
22-718.5445689111417226,229,631
11-813.6423468101419293,586,007
00-99.94123469132037912,261
Total:23.6%0055678101113151923,124,984
Games Above .500
Chance Will Make Playoffs