How are these numbers calculated?

Big Games

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

Week of 1/4100.0*Chance in playoffs100.0*Relegated100.0*Average seed
Wellington 0 Sydney 2 Out
+3.0
-0.2
Newcastle 2 Adelaide 1 -0.3
Perth 1 Central Coast 1 -2.3
+0.0
Brisbane 1 Melbourne 2 +0.3
-0.1
Week of 1/11100.0*Chance in playoffs100.0*Relegated100.0*Average seed
Perth 3 Adelaide 2 +17.9
-0.2
Melbourne 3 Wellington 0 +6.0
-0.3
Week of 1/18100.0*Chance in playoffs100.0*Relegated100.0*Average seed
Newcastle 2 Perth 1 No
+0.3
Points
Chance Will Make Playoffs