How are these numbers calculated?

Big Games

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

Week of 11/9100.0*Chance in playoffs100.0*Average seed
Purvis 81.4 McNichols 87.3 Out
-0.8
Metheny 85.6 M Crouch 89.7 -1.0
+0.1
Barnett 123.8 Vanzant 147.1 -0.6
Lippincott 149.4 Salsberry 111.8 -0.2
-0.2
Smith 131.4 S Crouch 97.7 +0.1
+0.1
If winner is:HomeAway
Week of 11/16100.0*Chance in playoffs100.0*Average seed
M Crouch vs Purvis-0.7+0.7
Salsberry vs Metheny+0.2-0.2
McNichols vs Barnett+0.2-0.2

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
52-0Out226482316,432,608
41-1Out737451112,854,025
30-2Out231686,431,307
Total:Out071525312225,717,940
Games Above .500
Chance Will Make Playoffs