attached is a workbook with the problem.
a database of economic data year by year .each column of data is ccompanied by a column of growth ratio to the year befor formated in "0.00%".
i am trying to build a UDF to deal with average growth rate ,as well as summig the data formated in "##,###.00"
for instance - in sheet gdpf how can i get the average of data formated in "0.00%".
thanks