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 +0.3
Suns 97 Bombers 95 +0.1
Week of 8/28100.0*Average seed
Dockers 108 Demons 54 +0.1
Saints 38 Swans 135 -0.1
Bombers 47 Tigers 74 +0.0
Week of 9/4100.0*Average seed
Demons 103 Giants 77 -0.7
Eagles 125 Saints 30 -0.1
Games Above .500
Chance Will Make Playoffs