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 +0.5
Suns 97 Bombers 95 -0.2
Crows 131 Lions 44 +0.1
Week of 8/28100.0*Average seed
Giants 132 Blues 51 -0.2
Hawks 134 Lions 62 +0.1
Suns 51 Power 88 +0.0
Week of 9/4100.0*Average seed
Lions 130 Bulldogs 122 -0.8
Hawks 113 Blues 56 -0.2
Swans 127 Suns 64 +0.0
Games Above .500
Chance Will Make Playoffs