How are these numbers calculated?

Big Games

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

Week of 8/19100.0*Chance in playoffs100.0*Average seed
IceHogs 2 ScreaminSeagulls 6 -18.0
-0.7
Renegades 1 GoldenSeals 7 -10.2
-0.2
Brewers 4 Brewskis 4 (ot)-4.6
-0.1
IceHogs 2 Brewskis 2 (ot)+0.6
+0.2
Week of 8/26100.0*Chance in playoffs100.0*Average seed
Brewskis 1 GoldenSeals 0 -3.2
-0.0
ScreaminSeagulls 4 BluesBrothers 5 -1.0
+0.1
Week of 9/5None
Points
Chance Will Make Playoffs