How are these numbers calculated?

Big Games

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

Week of 3/2100.0*Chance in playoffs100.0*Average seed
Red Bull 1 Novorizontino 0 +4.9
+0.1
Oeste 1 Red Bull 2 +3.5
+0.1
Santos 3 Oeste 2 -0.1
Week of 3/10100.0*Chance in playoffs100.0*Average seed
Red Bull 3 Sao Bento 2 In
+0.1
Sao Bento 1 Ponte Preta 2 -0.5
Santos 0 Novorizontino 1 +0.3
Corinthians 0 Santos 0 +0.1
Week of 3/16100.0*Chance in playoffs100.0*Average seed
Botafogo 4 Santos 0 +0.3
Guarani 1 Red Bull 2 +0.3
Points
Chance Will Make Playoffs