Working with dynamic cumulative fractions

GregoryAA

I am trying to create pareto charts for dashboards. I am referencing a sheet where I create totals and counts etc. One is a count of total items in a team. Impact =(Count@row / (SUM(CHILDREN(Count$2))) to get percentage for items for each team overall. Cumulative is for Pareto charts =SUMIFS(Impact$3:Impact$20, Row$3:Row$20, @cell <= Row@row). Row is a helper column that holds the row number. The problem is, when I sort the column Impact, The formula in Cumulative changes. So the absolute row numbers will not stay the same. For instance if I sort Impact in Descending the formula in Cumulative becomes =SUMIFS(Impact$17:Impact$3, Row$17:Row$3, @cell <= Row@row). Why are the absolute values changing? I update this sheet manually when the count changes and sort Impact column, but if the formula in Cumulative changes, the Pareto is all messed up.