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 +27.4
+1.0
Butt 8 Four 6 -2.9
-0.1
Disco 10 Yeo 3 -1.4
-0.1
OBC 16 Puckin 6 +1.4
+0.0
Jazz 3 Glory 10 -0.1
If winner is:HomeAway
Week of 4/30100.0*Chance in playoffs100.0*Average seed
Puckin vs 4th-19.4+18.8
-0.6+0.6
Yeo vs Butt+5.0-3.0
+0.2-0.1
Mafia vs Disco-0.8+1.0
Four vs Jazz-0.1+0.1
Glory vs OBC-0.1+0.1

What If

Chances based on how well the 4th finish out the regular season.   Explain

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
84-0In169302,055,476
73-199.9%08893011,339,330
62-290.30513991016,323,292
51-323.33204129708,605,410
40-40.104275613001,524,712
Total:75.6%064821138400039,848,220
Games Above .500
Chance Will Make Playoffs