How are these numbers calculated?

Big Games

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

Week of 8/23100.0*Chance in playoffs100.0*Average seed
OKC 0 Charleston 2 +11.2
+0.8
Orange County 1 Wilmington 2 -1.3
-0.1
Wilmington 3 Orlando 1 -1.0
-0.2
Sacramento 3 Charleston 1 -0.8
-0.2
Pittsburgh 3 Dallas 1 -0.8
Rochester 2 Harrisburg 2 +0.8
+0.1
Los Angeles 3 Wilmington 3 -0.2
-0.0
Charlotte 0 Pittsburgh 1 -0.2
+0.0
Seattle 5 Arizona 1 +0.1
Week of 8/30100.0*Chance in playoffs100.0*Average seed
Charleston 4 Pittsburgh 0 In
+0.5
Harrisburg 1 Rochester 4 -2.6
+0.0
Wilmington 0 Sacramento 0 +0.0
Charleston 2 Harrisburg 1 +0.4
Dayton 0 Wilmington 4 -0.3
Wilmington 0 Orlando 0 -0.0
Week of 9/6100.0*Chance in playoffs100.0*Average seed
Rochester 2 Wilmington 0 +0.3
Points
Chance Will Make Playoffs