How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Wednesday100.0*Chance in playoffs100.0*Average seed
Atletico-MG 6 Gama 4 +18.1
+1.0
Coritiba 1 Figueirense 2 +4.6
+0.3
Vasco da Gama 2 Ponte Preta 0 +3.6
+0.1
Internacional 0 Cruzeiro 1 -2.8
-0.1
Juventude 0 Paysandu 0 +0.0
Thursday100.0*Chance in playoffs100.0*Average seed
Sao Paulo 3 Vitoria 2 In
+0.0
Parana 1 Gremio 1 -0.2
Sunday100.0*Chance in playoffs100.0*Average seed
Gremio 1 Atletico-MG 0 -0.9
Atletico-PR 4 Juventude 0 +0.2
Sao Caetano 3 Santos 2 +0.1
Corinthians 1 Vasco da Gama 1 +0.1
Ponte Preta 2 Fluminense 3 -0.1
Points
Chance Will Make Playoffs