How are these numbers calculated?

Big Games

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

Week of 5/7100.0*Relegated100.0*Average seed
Roda 1 Willem II 0 -24.0
+0.8
NEC 2 AZ 1 +16.3
-0.4
Sparta 1 Twente 0 +12.1
-0.3
Zwolle 2 Heerenveen 1 +2.5
-0.3
Excelsior 3 Feyenoord 0 -0.1
Week of 5/14100.0*Relegated100.0*Average seed
Heerenveen 0 NEC 2 +44.3
-0.9
G.A. Eagles 1 Sparta 3 +27.7
-0.4
Vitesse 3 Roda 0 +10.7
-0.4
ADO 4 Excelsior 1 -0.0
Willem II 1 Ajax 3 +0.0
Points
Chance Will Win Championship