How are these numbers calculated?

Big Games

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

Week of 10/24100.0*Chance in playoffs100.0*Average seed
Ottawa 17 Montreal 23 +2.6
+0.2
Toronto 26 Hamilton 24 -0.9
Winnipeg 23 BC 28 -0.6
Week of 10/31100.0*Chance in playoffs100.0*Average seed
Montreal 17 Toronto 14 In
+1.2
Ottawa 25 Hamilton 34 -2.8
-0.2
Week of 11/7100.0*Chance in playoffs100.0*Average seed
Hamilton 29 Montreal 15 -0.4
Games Above .500
Chance Will Make Playoffs