How are these numbers calculated?

Big Games

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

Week of 5/10100.0*Relegated100.0*Average seed
Energie Cottbus 2 Hamburger SV 0 -17.8
+0.5
Hertha Berlin 1 Nürnberg 0 -6.2
+0.2
Arminia Bielefeld 2 BVB 2 -3.5
+0.1
MSV Duisburg 2 Bayern München 3 -3.3
+0.1
Hansa Rostock 1 Leverkusen 2 -0.5
Werder Bremen 6 Hannover 96 1 +0.2
Karlsruher 1 VfL Bochum 3 +0.1
Week of 5/17None
Points
Chance Will Win Championship