How are these numbers calculated?

Big Games

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

Week of 10/10100.0*Chance in playoffs100.0*Average seed
North Texas 2 Richmond 1 -9.0
-0.2
Madison 0 Omaha 0 +7.7
+0.1
Fort Lauderdale 2 Madison 2 +0.6
Week of 10/17100.0*Chance in playoffs100.0*Average seed
Greenville 1 Omaha 2 -27.0
-0.3
Orlando II 1 Richmond 3 +20.7
+0.3
Richmond 0 South Georgia 1 -17.1
-0.3
Madison 0 North Texas 1 -1.3
-0.1
Chattanooga 1 Madison 1 +0.5
Week of 10/24100.0*Chance in playoffs100.0*Average seed
Richmond 1 Chattanooga 2 -57.5
-0.9
Omaha 1 Fort Lauderdale 0 -11.8
-0.1
North Texas 2 South Georgia 1 -1.7
-0.1
Points
Chance Will Make Playoffs