I've created a Pivot Table in Power Query and next would like to add a column that sums the diagonals (starting in upper left). Any help would be appreciated!
Example:
April May June July diagonal Sum
X 8 1 2 7 8
Y 3 8 0 8 (3+1) = 4
Z 5 4 1 8 (5+8+2) = 15
W 5 4 1 8 (5+4+0+7) = 16
