Green Bay Packers Playoff Chances 2014 50/50

Beat Detroit 30-20, average seed up 1.8 to 2
12-4-0   .750

How are these numbers calculated?

Big Games

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

Week of 12/11100.0*Chance in playoffs100.0*Average seed
Buffalo 21 Green Bay 13 -3.9
-0.6
Philadelphia 27 Dallas 38 -3.2
-0.0
Seattle 17 San Francisco 7 +0.8
-0.1
Detroit 16 Minnesota 14 -0.2
-0.4
St. Louis 6 Arizona 12 -0.1
-0.1
Week of 12/18100.0*Chance in playoffs100.0*Average seed
Washington 27 Philadelphia 24 +8.0
+0.1
Tampa Bay 3 Green Bay 20 In
+0.7
Chicago 14 Detroit 20 -0.4
Week of 12/28100.0*Chance in playoffs100.0*Average seed
Green Bay 30 Detroit 20 +2.2
Seattle 20 St. Louis 6 -0.2
Games Above .500
Chance Will Make Playoffs