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 +0.1
Week of 8/22100.0*Chance in playoffs100.0*Average seed
Eagles 119 Demons 53 +10.2
+0.7
Tigers 98 Saints 72 -5.0
-0.1
Bombers 108 Suns 89 -4.1
+0.1
Kangaroos 101 Crows 94 +2.2
+0.2
Giants 67 Magpies 75 -2.1
-0.2
Power 140 Blues 37 +0.1
Week of 8/29100.0*Chance in playoffs100.0*Average seed
Swans 65 Tigers 68 Out
-0.2
Magpies 56 Hawks 121 +3.7
+0.3
Suns 99 Eagles 151 +1.3
Crows 141 Saints 62 -0.3
Games Above .500  (Full Screen)
Chance Will Make Playoffs  (Full Screen)