Display a Float data type as a Percentage in a Label using MapInfo Pro

Products affected: MapInfo Pro™
The following instructions show how to use an expression which converts a float value into a percentage, as well as displays an actual "%" sign on a label.

1. With the map or thematic map selected right click on the layer to be labeled, and choose layer properties.

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2. Once in Layer Properties, select which column to display in the "Label with" drop down menu. 
3. Choose the Expression button on the right of the window.
4. Enter the expression of the data column first, multiply it by 100, and add a text value (%) to the end. (reference image below)
EX: Pob_1990*100+"%"
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This will then display the values in percentage form with the % symbol. (ex: 7.2% , 9.3%)

Explanation: When percentage values are in a table and they are in float form, they will likely be displayed as a decimal (Ex: 0.072 , 0.093). First convert that number into a percentage by moving the decimal over 2 spaces.  That is accomplished by multiplying by 100. Then add the percent sign  % inside of quotes to add that as part of the text results.

UPDATED:  December 6, 2019