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
Universidad de Concepcion 3 Olimpia 3 +5.8
Godoy Cruz 2 Sporting Cristal 0 In
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 -0.1
Chance Will Make Playoffs