How are these numbers calculated?

Big Games

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

Week of 2/8100.0*Chance in playoffs100.0*Average seed
Easton 1 Emmaus 9 -0.1
Week of 2/19100.0*Chance in playoffs100.0*Average seed
Emmaus 1 Parkland 8 +25.0
+0.6
Easton 0 Parkland 11 In
+0.7
Emmaus 1 SouthernLehigh 11 -25.0
-0.2
Points
Chance Will Make Playoffs