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
Taylor 3 Wright 7 -21.2
-0.8
Lewis 0 van Gerwen 7 +5.3
+0.1
Wade 7 Lewis 4 +5.2
+0.1
Chisnall 6 van Gerwen 6 +0.5
Anderson 7 van Barneveld 4 -0.4
Week of 5/4100.0*Chance in playoffs100.0*Average seed
van Gerwen 3 Taylor 7 +25.2
+0.8
van Barneveld 5 Chisnall 7 +4.3
+0.1
Wright 7 Lewis 2 +3.4
+0.1
Wade 3 Anderson 7 -2.8
-0.1
Week of 5/11100.0*Chance in playoffs100.0*Average seed
Chisnall 6 Wade 6 In
+0.1
Taylor 7 Lewis 5 In
+0.3
van Gerwen 7 Anderson 4 +0.2
Games Above .500
Chance Will Make Playoffs