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*Chance in playoffs100.0*Average seed
Sharks 32 Roosters 22 In
+0.5
Raiders 22 Sea Eagles 36 +0.7
Cowboys 26 Knights 6 -0.6
+0.1
Panthers 28 Broncos 12 +0.3
Titans 22 Warriors 24 +0.3
Rabbitohs 28 Bulldogs 20 +0.1
Week of 8/30100.0*Chance in playoffs100.0*Average seed
Sharks 18 Cowboys 31 -0.3
Bulldogs 34 Panthers 14 -0.1
Sea Eagles 28 Storm 8 -0.0
Week of 9/5100.0*Chance in playoffs100.0*Average seed
Raiders 18 Sharks 38 +0.5
Broncos 16 Bulldogs 11 +0.3
Games Above .500
Chance Will Make Playoffs