How are these numbers calculated?

Big Games

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

Week of 4/8100.0*Chance in playoffs100.0*Average seed
San Jose 2 Cucuta Deportivo 4 In
Chivas Guadalajara 3 Santos 2 +0.2
Week of 4/15None
Week of 4/22None
Chance Will Make Playoffs