How are these numbers calculated?

Big Games

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

Week of 4/23100.0*Relegated100.0*Average seed
Nürnberg 2 BVB 3 +19.5
-0.5
SC Freiburg 1 VfL Wolfsburg 0 +12.8
-0.2
VfL Bochum 0 VfB Stuttgart 2 -5.3
+0.2
Leverkusen 3 Hannover 96 0 -1.9
+0.1
Hertha Berlin 0 Schalke 1 -0.1
Week of 5/8100.0*Relegated100.0*Average seed
Nürnberg 1 FC Köln 0 -15.7
+0.7
VfL Bochum 0 Hannover 96 3 Yes
+0.1
Points
Chance Will Win Championship