How are these numbers calculated?

Big Games

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

Week of 4/23100.0*Chance in playoffs100.0*Average seed
4th 7 Mafia 5 -23.9
-0.8
Disco 10 Yeo 3 -1.6
-0.0
OBC 16 Puckin 6 +1.2
+0.0
Butt 8 Four 6 -0.5
Jazz 3 Glory 10 +0.1
If winner is:HomeAway
Week of 4/30100.0*Chance in playoffs100.0*Average seed
Mafia vs Disco+24.0-29.3
+0.7-0.8
Yeo vs Butt+2.4-1.5
+0.1-0.1
Puckin vs 4th+0.9-0.9
Four vs Jazz+0.2-0.2
Glory vs OBC-0.2+0.1

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
74-099.9%011662202,685,951
63-185.502759141011,961,122
52-222.322050244015,826,977
41-30.1083352608,032,489
30-4Out136481501,341,681
Total:41.3%01132726161331039,848,220
Games Above .500
Chance Will Make Playoffs