How are these numbers calculated?

Big Games

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

Week of 8/23100.0*Average seed
Raiders 22 Sea Eagles 36 -0.1
Rabbitohs 28 Bulldogs 20 -0.1
Storm 64 Eels 4 +0.1
Week of 8/30100.0*Average seed
Sea Eagles 28 Storm 8 -0.4
Tigers 18 Rabbitohs 32 -0.1
Week of 9/5100.0*Average seed
Sea Eagles 26 Panthers 38 +0.8
Storm 23 Titans 22 +0.1
Games Above .500
Chance Will Make Playoffs