How are these numbers calculated?

Big Games

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

Week of 8/15None
Week of 8/22100.0*Chance in playoffs100.0*Average seed
Kangaroos 101 Crows 94 -22.4
-0.7
Bombers 108 Suns 89 +7.4
+0.1
Eagles 119 Demons 53 -3.1
-0.1
Tigers 98 Saints 72 -2.0
-0.1
Giants 67 Magpies 75 +0.5
-0.0
Week of 8/29100.0*Chance in playoffs100.0*Average seed
Swans 65 Tigers 68 Out
-0.5
Magpies 56 Hawks 121 +10.9
+0.3
Crows 141 Saints 62 +0.5
Suns 99 Eagles 151 -0.2
Games Above .500
Chance Will Make Playoffs