How are these numbers calculated?

Big Games

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

Week of 9/13100.0*Chance in playoffs100.0*Average seed
Bills Bills Bills 75.2 Arrow's Team 95.08 +10.5
+1.1
guywwe's Best T 86.02 JM04 93.36 +0.3
+0.1
BrunoB 93.56 Jordan Pete's T 79.7 -0.3
-0.1
Le Chat 92.54 Fab's Team 76.4 +0.3
+0.1
If winner is:HomeAway
Week of 9/20100.0*Chance in playoffs100.0*Average seed
Rocco vs Arrow's Team-10.7+10.6
-1.1+1.1
Sly49ers vs Fab's Team+0.3-0.3
+0.1-0.1
BrunoB vs Party Bus-0.2+0.2
-0.1+0.1
guywwe's Best T vs pure skillz-0.2+0.2
-0.1+0.1

What If

Chances based on how well the Arrow's Team finish out the regular season.   Explain

100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910111213141516Count
1312-0In1001,550
1211-1In991011,338
1110-2In93700062,034
109-3In69262030206,428
98-4In244018215100466,737
87-5100.0%111241623185100744,139
76-683.1003154142423134100867,252
65-710.8020027162525166100741,905
54-80.1000017182928143466,055
43-9Out0015214132206,883
32-10Out002227661,891
21-11Out049511,328
10-12Out01001,596
Total:59.6%98877777666555443,849,136
Games Above .500
Chance Will Make Playoffs