How are these numbers calculated?

Big Games

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

Week of 1/10100.0*Chance in playoffs100.0*Average seed
Bizkaia Gernika 15 Perpignan 50 +27.5
+0.3
Rovigo 17 Worcester 80 -2.2
-0.0
Week of 1/17100.0*Chance in playoffs100.0*Average seed
Perpignan 40 Rovigo 22 Yes
+0.0
Games Above .500
Chance Will Make Playoffs