Alternatively, you could use the "xl_rowcol_to_cell" function in Spreadsheet::WriteExcel::Utility to convert the row and column values to "A1" notation

ex: 

my $jloc = xl_rowcol_to_cell($row+2, 12);
my $kloc = xl_rowcol_to_cell($row+2, 12);

$worksheet->write_formula($row+2, 12, '=1-('.$kloc.'/'.$jloc.')',$alig
+nPerc);

[download]

In reply to Re^2: Spreadsheet::WriteExcel formulas in multi-row output by Anonymous Monk
in thread Spreadsheet::WriteExcel formulas in multi-row output by finhagen

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