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
Larissa 1 Xanthi 0 -8.4
+0.5
Levadiakos 0 AEK 2 -6.1
+0.1
Iraklis 2 Panetolikos 1 +1.0
-0.2
Veria 4 Asteras 3 +0.1
Week of 4/30100.0*Relegated100.0*Average seed
Panathinaikos 2 Larissa 0 -0.3
Asteras 2 Iraklis 2 -0.2
Points
Chance Will Make Playoffs