How are these numbers calculated?

Big Games

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

Week of 7/22100.0*Chance in playoffs100.0*Average seed
Ponte Preta 2 Novorizontino 0 In
+0.1
Santos 1 Santo Andre 1 -2.0
-0.1
Corinthians 1 Palmeiras 0 +1.5
+0.3
Santo Andre 1 Ituano 3 -0.4
Palmeiras 2 Agua Santa 1 -0.1
Points
Chance Will Make Playoffs