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
NEC 2 AZ 1 -17.9
+0.7
Roda 1 Willem II 0 +6.6
-0.2
Sparta 1 Twente 0 +5.3
-0.2
Zwolle 2 Heerenveen 1 +0.2
Ajax 4 G.A. Eagles 0 -0.1
Week of 5/14100.0*Relegated100.0*Average seed
Heerenveen 0 NEC 2 -37.8
+1.2
G.A. Eagles 1 Sparta 3 +5.3
-0.2
Vitesse 3 Roda 0 -0.7
+0.0
Points
Chance Will Win Championship