How are these numbers calculated?

Big Games

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

Week of 6/8100.0*Chance in playoffs100.0*Consolation100.0*Average seed
Elim 1 5 Pakuranga 2 1 -18.7
+18.7
-0.7
Sancta Maria 6 Howick Black 0 +3.7
-3.7
Pakuranga 1 6 Howick Red 0 -0.4
+0.4
Elim 2 6 Macleans Red 0 -0.1
+0.1
Week of 6/15100.0*Chance in playoffs100.0*Consolation100.0*Average seed
Pakuranga 2 5 Howick Red 1 +23.9
-23.9
+0.7
Pakuranga 1 5 Howick Black 1 -13.2
+13.2
-0.1
Sancta Maria 0 Macleans Red 6 +4.6
-4.6
+0.2
Week of 6/22100.0*Chance in playoffs100.0*Consolation100.0*Average seed
Pakuranga 1 6 Macleans Red 0 -28.1
+28.1
-0.3
Pakuranga 2 2 Howick Black 4 -28.1
+28.1
-0.3
Points
Chance Will Make Playoffs