How are these numbers calculated?

Big Games

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

Week of 8/9100.0*Chance in playoffs100.0*Average seed
Melb Ice 3 Adelaide 1 +1.1
-0.1
CBR 2 Melb Mustangs 4 -0.9
-0.4
Syd Ice Dogs 2 Perth 8 +0.9
+0.1
CBR 4 Melb Mustangs 2 In
+0.3
Syd Bears 0 Syd Ice Dogs 8 -0.3
Melb Ice 4 Adelaide 2 +0.2
-0.1
Melb Mustangs 1 Melb Ice 5 -0.0
Week of 8/16100.0*Chance in playoffs100.0*Average seed
Adelaide 5 CBR 2 -0.4
Adelaide 6 CBR 2 -0.2
Melb Mustangs 6 Newcastle 3 -0.1
Melb Ice 7 Newcastle 2 -0.1
Perth 3 Syd Ice Dogs 6 -0.0
Week of 8/23100.0*Chance in playoffs100.0*Average seed
Syd Bears 2 CBR 3 +0.1
Points
Chance Will Make Playoffs