How are these numbers calculated?

Big Games

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

Week of 8/22100.0*Chance in playoffs100.0*Average seed
Warriors 12 Roosters 46 In
+0.8
Eels 22 Sea Eagles 12 -0.3
+0.1
Panthers 10 Storm 24 +0.2
Week of 8/28100.0*Chance in playoffs100.0*Average seed
Bulldogs 14 Rabbitohs 21 -0.1
Sea Eagles 26 Panthers 25 -0.1
Week of 9/4100.0*Chance in playoffs100.0*Average seed
Roosters 22 Rabbitohs 18 +0.6
Cowboys 30 Sea Eagles 16 +0.6
Games Above .500
Chance Will Make Playoffs