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
Hekari United 0 Team Wellington 2 +32.6
+32.6
+2.1
Team Wellington 2 Tefana 1 +25.3
+25.3
+2.2
Suva 2 Amicale 3 -2.5
-2.5
-0.1
Auckland City 3 Western United 0 -2.4
-2.4
-0.1
Pirae 3 Lupe ole Soaga 3 +1.9
+1.9
+0.1
Ba 3 Lupe ole Soaga 1 -1.7
-1.7
-0.1
Suva 0 Auckland City 3 -0.5
-0.5
-0.0
Ba 3 Gaïtcha 0 -0.4
-0.4
-0.0
Western United 0 Amicale 1 -0.4
-0.4
-0.0
Tafea 2 Hekari United 3 -0.4
-0.4
Gaïtcha 5 Pirae 2 -0.2
-0.2
+0.0
If winner is:HomeDrawAway
Tafea vs Team Wellington-38.8InIn
-38.8YesYes
-1.7+0.6+1.4
Tefana vs Tafea+1.5+9.5-5.9
+1.5+9.5-5.9
+0.1+0.2-0.2
Tefana vs Hekari United+1.2+9.2-5.5
+1.2+9.2-5.5
+0.1+0.2-0.2
If winner is:HomeDrawAway
Week of 4/18100.0*Chance in playoffs100.0*Playoffs100.0*Average seed
Gaïtcha vs Lupe ole Soaga-8.1+5.6+5.5
-8.1+5.6+5.5
-0.2+0.2+0.2
Amicale vs Auckland City-1.3-6.2+4.2
-1.3-6.2+4.2
Ba vs Pirae-2.2-2.2+3.2
-2.2-2.2+3.2
-0.3-0.0+0.3

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-D-LplayoffsPlayoffs123456789101112Count
91-0-0InYes4243152,211,836
70-1-0InYes40601,030,180
60-0-134.6%34.6%1826392342,215,128
Total:73.5%73.5%1725211016925,457,144
Points
Chance Will Make Playoffs