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
CSH 14 Clarke 22 -0.1
-0.7
Week of 10/26100.0*Chance in playoffs100.0*Average seed
Malverne 6 CSH 45 In
+0.1
Seaford 40 East Rockaway 8 -0.0
Clarke 37 VSS 0 -0.0
Week of 11/2100.0*Chance in playoffs100.0*Average seed
Clarke 57 Oyster Bay 14 -0.0
CSH 48 West Hempstead 13 +0.0
Games Above .500
Chance Will Make Playoffs