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*Average seed
Blues 78 Demons 55 -0.4
Suns 97 Bombers 95 +0.1
Saints 97 Cats 97 +0.0
Week of 8/28100.0*Average seed
Dockers 108 Demons 54 -0.1
Saints 38 Swans 135 +0.1
Bombers 47 Tigers 74 +0.1
Suns 51 Power 88 +0.0
Week of 9/4100.0*Average seed
Demons 103 Giants 77 +0.8
Magpies 92 Bombers 95 -0.3
Eagles 125 Saints 30 +0.1
Games Above .500
Chance Will Make Playoffs