How are these numbers calculated?

Big Games

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

Week of 4/23100.0*Chance in playoffs100.0*Average seed
Godoy Cruz 2 Sporting Cristal 0 +1.0
Universidad de Concepcion 3 Olimpia 3 +0.5
Week of 5/7100.0*Chance in playoffs100.0*Average seed
Olimpia 0 Sporting Cristal 1 -0.4
Godoy Cruz 1 Universidad de Concepcion 0 -0.0
Chance Will Make Playoffs