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*Average seed
Heracles 4 ADO 0 +0.3
Groningen 1 PSV 1 -0.1
Week of 5/14100.0*Average seed
Twente 3 Groningen 5 -0.5
Heerenveen 0 NEC 2 +0.4
Feyenoord 3 Heracles 1 -0.2
Points
Chance Will Win Championship