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# FileMaker Pro Custom Functions

FormatPercent ( Number ; Decimals )

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Discuss this Custom Function

Will Loving, Dedication Technologies, Inc.
http://dedicationtechnologies.com

Formats a number as a percentage text string with specified number of decimal places

Sample Input:
 FormatPercent ( .4587 ; 1 )
Sample Output:
 45.9%

Then copy & paste into FileMaker Advanced's Edit Custom Function window.

## Description:

Formats a number value as a percentage in a text string with the specified number of decimal places, from 0 to 10. Useful for calculated text strings that need to include a formatted percentage.

17 Jan 2011 - modified to address issue noted by Jeremiah Hammond.

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

## Discuss:

The current version (as of 01/17/2011) fails with the following input: FormatPercent( .1304 ; 1 ). It'll return 1300% instead of 13.0%. The issue has to do with the ending case statement, where the rounded percent - integer of the rounded percentage happens to equal 0, instead of some decimal (say: 13.0 - 13). The function will attach zeros to the whole number portion of the percentage without a decimal.

Here's a fixed version of the function:

Case ( Decimals = 0 or IsEmpty ( Decimals ) ; Int ( Round ( Number * 100 ; 0 ) ) ;
Int ( Round( Number * 100 ; Decimals ) ) &
Case ( ( Number * 100 ) = Int ( Number * 100 ) ; Left ( ".0000000000" ; Decimals + 1 ) ;
Round ( Number * 100 ; Decimals ) - Int( Round ( Number * 100 ; Decimals ) ) = 0 ; Left ( ".0000000000" ; Decimals + 1 ) ;
Left ( Round ( Number * 100 ; Decimals ) - Int( Round ( Number * 100 ; Decimals ) ) & "0000000000" ; Decimals+1 ) ) )
& "%"

Jeremiah Hammond, Indianapolis
January 17, 2011 2:09am

It would be cool if this could be modified to accept a minimum decimal and a maximum decimal parameter, where the minimum would be used in cases where the number is an integer and max is for a non-integer. E.g. I'd prefer to display "50%" or "50.00%" rather than "50.000000%", but if the numeber is non integer I would want to see 6 decimal places, such as "3.056214%".

Tom R., Denver
May 09, 2012 7:50am

Tom - To achieve the result you are looking for, simply replace the first "Result" text - Left ( ".0000000000" ; Decimals + 1 ) - in the second Case statement (3rd line of the calculation) with empty quotes.

Will Loving, Amherst, MA
May 09, 2012 8:18am

Thanks, Will. I'll give it a try.

Tom, Denver
May 09, 2012 10:55pm