How are these numbers calculated?

Big Games

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

Week of 8/11100.0*Chance in playoffs100.0*Top 4100.0*Average seed
West Coast 100 Carlton 83 +21.1
+0.8
+1.0
Essendon 80 Adelaide 123 +4.0
+0.2
Bulldogs 57 GWS 105 +3.5
-0.6
+0.1
Port Adelaide 98 Collingwood 71 -2.0
-0.4
-0.1
Sydney 143 Fremantle 39 -1.9
-0.3
-0.1
Melbourne 96 St Kilda 72 -0.6
-0.0
Hawthorn 116 North Melbourne 89 -0.3
Week of 8/19100.0*Chance in playoffs100.0*Top 4100.0*Average seed
GWS 81 West Coast 60 -24.0
No
-0.9
Melbourne 104 Brisbane 91 -7.4
-0.2
Bulldogs 79 Port Adelaide 96 +5.9
-0.3
+0.1
Gold Coast 57 Essendon 90 -5.7
-0.2
St Kilda 127 North Melbourne 78 -3.5
-0.2
Carlton 77 Hawthorn 70 +0.6
+0.1
If winner is:HomeTieAway
Week of 8/25100.0*Chance in playoffs100.0*Top 4100.0*Average seed
West Coast vs Adelaide+36.6-27.6-36.3
+1.0-0.5-1.0
Essendon vs Fremantle-10.7+6.7+10.6
-0.3+0.1+0.3
Collingwood vs Melbourne+8.1-8.0-8.0
+0.2-0.2-0.2
Richmond vs St Kilda+3.6-0.2-3.6
+0.3-0.2-0.3
Hawthorn vs Bulldogs+2.9-0.9-2.9
+0.3-0.2-0.3

What If

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

100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seedWooden
TPW-L-TplayoffsTop 4123456789101112131415161718SpoonCount
481-0-076.7%No29472030No714,183,066
460-0-112.5No13383712No7,172,880
440-1-03.8No4254428No714,195,950
Total:40.1%No1526232314No1,435,551,896
Games Above .500
Chance Will Make Playoffs