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*Wooden Spoon100.0*Average seed
Dragons 18 Tigers 34 -3.4
+0.3
Storm 64 Eels 4 No
Week of 8/30100.0*Wooden Spoon100.0*Average seed
Eels 26 Dragons 22 +0.3
Tigers 18 Rabbitohs 32 -0.1
Week of 9/5100.0*Wooden Spoon100.0*Average seed
Dragons 19 Warriors 10 -0.5
Cowboys 50 Tigers 22 -0.1
Games Above .500
Chance Will Make Playoffs