How are these numbers calculated?

Big Games

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

Week of 7/21100.0*Chance in playoffs100.0*Bye To Finals100.0*Average seed
Botany 2 Dunedin 8 -40.4
-0.4
Botany 5 Dunedin 6 -22.2
-0.2
-0.2
Dunedin 1 Skycity 5 +3.7
No
+0.0
Week of 7/28100.0*Chance in playoffs100.0*Bye To Finals100.0*Average seed
West Auckland 6 Botany 3 -8.8
-0.1
West Auckland 6 Botany 0 -5.1
-0.1
Dunedin 4 Skycity 5 +4.2
+0.0
Week of 8/4100.0*Chance in playoffs100.0*Bye To Finals100.0*Average seed
Botany 0 Skycity 7 Out
-0.0
Points
Chance Will Make Playoffs