How are these numbers calculated?

Big Games

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

Week of 10/19100.0*Chance in playoffs100.0*Average seed
Saskatchewan 28 Montreal 34 -0.4
-0.2
Calgary 34 Hamilton 32 In
-0.1
BC 39 Edmonton 19 +0.1
+0.0
Week of 10/26100.0*Chance in playoffs100.0*Average seed
Saskatchewan 26 Toronto 31 -0.2
Montreal 27 Edmonton 25 +0.2
Week of 11/2100.0*Chance in playoffs100.0*Average seed
Edmonton 27 Calgary 30 +0.3
Games Above .500
Chance Will Make Playoffs