How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Thursday100.0*Chance in playoffs100.0*Average seed
St. Catharines 5 Hamilton Hub Tigers 4 +21.0
+0.4
Saturday100.0*Chance in playoffs100.0*Average seed
Hamilton Hub Tigers 5 Cambridge 7 -0.1
Sunday100.0*Chance in playoffs100.0*Average seed
Brantford 3 Waterloo Ice 3 In
+0.2
Cambridge 1 St. Catharines 5 In
+0.8
Games Above .500
Chance Will Make Playoffs