How are these numbers calculated?

Big Games

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

Week of 3/19100.0*Chance in playoffs100.0*Average seed
Devils B 1 Lions B 0 -12.4
-0.2
Week of 3/23100.0*Chance in playoffs100.0*Average seed
Redhawks B 2 Lions B 1 -33.6
-0.7
Devils B 5 Camb Women 0 -22.3
-0.4
Week of 3/31None
Points
Chance Will Make Playoffs