How are these numbers calculated?

Big Games

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

Week of 4/11100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Tafea 2 Hekari United 3 -20.9
-20.9
-2.0
Pirae 3 Lupe ole Soaga 3 +1.9
+1.9
+0.1
Suva 2 Amicale 3 -0.9
-0.9
+0.1
Auckland City 3 Western United 0 -0.8
-0.8
+0.1
Ba 3 Gaïtcha 0 -0.5
-0.5
-0.0
Suva 0 Auckland City 3 -0.4
-0.4
-0.0
Western United 0 Amicale 1 -0.4
-0.4
-0.0
Team Wellington 2 Tefana 1 -0.4
-0.4
Hekari United 0 Team Wellington 2 +0.3
+0.3
+0.0
Gaïtcha 5 Pirae 2 +0.3
+0.3
-0.0
Ba 3 Lupe ole Soaga 1 -0.2
-0.2
+0.1
If winner is:HomeDrawAway
Tafea vs Team Wellington+23.3OutOut
+23.3NoNo
+2.1-0.5-1.9
Tefana vs TafeaOutOut+23.3
NoNo+23.3
-2.2-0.5+2.4
Tefana vs Hekari United+0.2+0.3-0.4
+0.2+0.3-0.4
+0.1-0.0-0.1
If winner is:HomeDrawAway
Week of 4/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Amicale vs Auckland City+0.1-1.1+0.4
+0.1-1.1+0.4
+0.0-0.1+0.0
Gaïtcha vs Lupe ole Soaga-0.5+0.3+0.3
-0.5+0.3+0.3
+0.0+0.1-0.1
Ba vs Pirae-0.2-0.3+0.4
-0.2-0.3+0.4
+0.2+0.1-0.2
Suva vs Western United-0.0+0.1-0.0

What If

Chances based on how well the Tafea finish out the regular season.   Explain

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsPlayoffs123456789101112Count
62-0-096.4%96.4%275118300899,364
41-1-0OutNo2044315836,800
31-0-1OutNo4243626911,794,748
20-2-0OutNo32340277194,036
10-1-1OutNo021232468835,124
00-0-2OutNo3070897,072
Total:15.9%15.9%58348131412913135,457,144
Points
Chance Will Make Playoffs