How are these numbers calculated?

Big Games

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

Week of 11/22100.0*Chance in playoffs100.0*Average seed
PERS 63 CHICO 52 -5.2
-0.6
MORA 34 NY 72 -4.4
-0.1
KING 77 BOS 80 +1.7
VICK 80 ROSE 92 -1.3
-0.1
FD 74 CAT5 48 -0.4
MUFF 62 KEIT 79 -0.1
-0.2
Week of 11/29100.0*Chance in playoffs100.0*Average seed
MORA 57 CHICO 74 +13.6
+0.9
FD 90 ROSE 137 -5.8
-0.2
KING 127 NY 93 +5.5
+0.2
MUFF 62 CAT5 91 +1.0
PERS 66 KEIT 62 +0.2
+0.3
Week of 12/6100.0*Chance in playoffs100.0*Average seed
CHICO 90 KING 103 -0.9
KEIT 84 MORA 73 -0.4
ROSE 73 MUFF 100 +0.4
Games Above .500
Chance Will Make Playoffs