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 +1.0
-0.4
Storm 64 Eels 4 -1.0
+0.0
Week of 8/30100.0*Wooden Spoon100.0*Average seed
Eels 26 Dragons 22 +0.4
-0.3
Tigers 18 Rabbitohs 32 +0.1
Week of 9/5100.0*Wooden Spoon100.0*Average seed
Dragons 19 Warriors 10 No
+0.5
Cowboys 50 Tigers 22 +0.1
Games Above .500
Chance Will Make Playoffs