How are these numbers calculated?

Big Games

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

Week of 8/21100.0*Chance in playoffs100.0*Average seed
Giants 44 Swans 133 -5.2
-0.4
Magpies 56 Tigers 147 -0.9
+0.1
Kangaroos 94 Dockers 83 Out
Saints 97 Cats 97 +0.4
+0.1
Hawks 86 Power 108 -0.1
Week of 8/28100.0*Chance in playoffs100.0*Average seed
Giants 132 Blues 51 +0.3
Suns 51 Power 88 -0.1
Week of 9/4100.0*Chance in playoffs100.0*Average seed
Demons 103 Giants 77 -0.6
Power 122 Dockers 53 -0.5
Cats 119 Crows 80 -0.4
Magpies 92 Bombers 95 +0.2
Games Above .500
Chance Will Make Playoffs