How are these numbers calculated?

Big Games

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

Week of 9/25100.0*Chance in playoffs100.0*Average seed
Salem 49 Bogue Chitto 0 +17.3
+0.7
If winner is:HomeAway
Week of 10/2100.0*Chance in playoffs100.0*Average seed
Lumberton vs Salem-17.3+17.3
-0.8+0.8
Sacred Heart vs Stringer-1.8+1.8
Bogue Chitto vs Mount Olive+1.5-1.5

What If

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

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567Count
54-0In6930118,743,993
43-1100.0%1447344074,553,458
32-271.90325442530111,807,869
21-34.50434471474,563,234
10-4Out1306918,746,090
Total:59.3%815181918158298,414,644
Games Above .500
Chance Will Make Playoffs