How are these numbers calculated?

Big Games

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

Week of 4/3100.0*Chance in playoffs100.0*Average seed
Godoy Cruz 0 Universidad de Chile 1 In
+0.4
Week of 4/10100.0*Chance in playoffs100.0*Average seed
Atletico Nacional 3 Penarol 0 -0.1
Week of 4/17100.0*Chance in playoffs100.0*Average seed
Universidad de Chile 2 Atletico Nacional 1 +0.7
Points
Chance Will Make Playoffs