How are these numbers calculated?

Big Games

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

Week of 8/15100.0*Chance in playoffs100.0*Average seed
Blues 76 Cats 82 +0.0
Week of 8/22100.0*Chance in playoffs100.0*Average seed
Bombers 108 Suns 89 -4.8
-0.0
Eagles 119 Demons 53 +4.6
+0.3
Kangaroos 101 Crows 94 +4.1
+0.2
Tigers 98 Saints 72 -3.2
-0.1
Giants 67 Magpies 75 -0.4
-0.1
Week of 8/29100.0*Chance in playoffs100.0*Average seed
Swans 65 Tigers 68 Out
-0.4
Magpies 56 Hawks 121 +5.7
+0.2
Suns 99 Eagles 151 +1.3
Crows 141 Saints 62 -0.1
Games Above .500
Chance Will Make Playoffs