How are these numbers calculated?

Big Games

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

Week of 7/1100.0*Chance in playoffs100.0*Average seed
Panama City 0 Orlando City 2 -19.4
-0.7
Jax 1 Panama City 3 +16.0
+1.0
Orlando City 2 Mississippi 1 -3.5
-0.1
Tampa 2 Bradenton 0 +2.2
+0.1
Ft. Lauderdale 0 Ocala 3 -1.7
-0.1
Tampa 2 Ocala 2 +1.3
+0.1
Mississippi 1 Tampa 0 +0.3
+0.0
Ft. Lauderdale 2 Mississippi 0 +0.2
Week of 7/8100.0*Chance in playoffs100.0*Average seed
Ocala 2 Panama City 0 -12.8
-0.8
Panama City 0 Ocala 4 Out
-0.7
Mississippi 2 Bradenton 1 +2.6
Ft. Lauderdale 2 Panama City 2 -1.8
-0.1
Orlando City 1 Bradenton 3 +1.7
Orlando City 1 Tampa 1 +1.3
El Paso 1 Laredo 4 -0.2
El Paso 3 Texas 0 -0.2
El Paso 0 Austin 1 +0.2
Jax 1 Mississippi 4 -0.1
Week of 7/15100.0*Chance in playoffs100.0*Average seed
Mississippi 2 Panama City 1 -1.1
Ft. Lauderdale 1 Tampa 3 -0.3
Points
Chance Will Make Playoffs