How are these numbers calculated?

Big Games

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

Week of 4/29100.0*Relegated100.0*Average seed
NAC 3 Heerenveen 0 +0.2
Feyenoord 3 Sparta 1 No
Groningen 4 Excelsior 0 No
+1.0
Zwolle 0 Willem II 1 +0.1
-0.2
VVV 1 Roda 4 -0.0
+0.2
Heracles 2 Utrecht 2 -0.0
Week of 5/6100.0*Relegated100.0*Average seed
Sparta 2 Heracles 5 -0.3
PSV 0 Groningen 0 +0.3
Excelsior 1 Ajax 2 +0.2
Willem II 2 Vitesse 2 +0.1
Points
Chance Will Win Championship