How are these numbers calculated?

Big Games

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

Week of 5/7100.0*Chance in playoffs100.0*Average seed
Mafia 7 Puckin 6 +30.3
+1.0
4th 1 Glory 10 +5.7
+0.1
Disco 4 Butt 8 -4.2
-0.1
OBC 0 Four 5 -0.8
Week of 5/14100.0*Chance in playoffs100.0*Average seed
Glory 10 Mafia 5 -15.1
-0.5
Four 8 4th 12 -7.0
-0.1
Butt 11 Jazz 4 -5.9
-0.2
Puckin 3 Disco 4 +2.1
+0.1
Yeo 1 OBC 14 +0.3
If winner is:HomeAway
Week of 5/21100.0*Chance in playoffs100.0*Average seed
Mafia vs Four+30.0-30.0
+0.5-0.5
Yeo vs 4th+20.0-19.9
+0.2-0.2
Butt vs OBC-12.5+12.5
-0.4+0.4
Puckin vs Glory+7.4-7.4
+0.1-0.1
Disco vs Jazz+4.3-4.3

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
61-075.0%49262514,142,773
50-114.91584114,147,967
Total:44.9%242155028,290,740
Games Above .500
Chance Will Make Playoffs