num() function performance

[Anonymous]

Hi all

i have a field that sometimes has % values and sometimes has decimal values

i used this expression but it eats up performance

=if(MaxString({$<NAME_={'$(vSelectedName)'}>} IUnits) = '%',

num($(vTest),'#,##0.00%'),

num($(vTest),'#,##0.00'))

is there another way to write this with better performance?

Thanks

J