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
Deportes Tolima 2 Boca Juniors 2 In
+0.2
Jorge Wilstermann 3 Athletico-PR 2 -2.7
-0.2
Week of 5/7100.0*Chance in playoffs100.0*Average seed
Boca Juniors 2 Athletico-PR 1 -0.6
Points
Chance Will Make Playoffs