How are these numbers calculated?

Big Games

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

Week of 4/27100.0*Chance in playoffs100.0*Average seed
Anderson 7 van Barneveld 4 -28.8
-0.9
Wade 7 Lewis 4 +5.1
+0.2
Taylor 3 Wright 7 +4.0
+0.1
Lewis 0 van Gerwen 7 +3.2
+0.1
Chisnall 6 van Gerwen 6 -0.2
-0.0
Week of 5/4100.0*Chance in playoffs100.0*Average seed
van Barneveld 5 Chisnall 7 -23.3
-1.1
van Gerwen 3 Taylor 7 -13.5
-0.2
Wright 7 Lewis 2 +2.8
+0.1
Wade 3 Anderson 7 -2.0
Week of 5/11100.0*Chance in playoffs100.0*Average seed
Wright 7 van Barneveld 1 -0.4
Taylor 7 Lewis 5 +0.2
Chisnall 6 Wade 6 +0.1
Games Above .500
Chance Will Make Playoffs