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 +0.9
-0.1
VVV 1 Roda 4 +0.6
-0.7
Feyenoord 3 Sparta 1 No
+0.1
Zwolle 0 Willem II 1 +0.1
-0.2
Groningen 4 Excelsior 0 -0.0
Heracles 2 Utrecht 2 +0.0
Week of 5/6100.0*Relegated100.0*Average seed
Utrecht 1 VVV 0 -0.4
Twente 1 NAC 1 +0.2
Excelsior 1 Ajax 2 +0.2
Willem II 2 Vitesse 2 -0.2
Points
Chance Will Win Championship