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*Chance wins title100.0*Average seed
Excelsior 3 Feyenoord 0 -11.3
-0.1
Ajax 4 G.A. Eagles 0 -1.6
Week of 5/14100.0*Chance wins title100.0*Average seed
Feyenoord 3 Heracles 1 Yes
+0.2
Willem II 1 Ajax 3 -8.3
-0.1
Points
Chance Will Win Championship