
// Green label "▲ "+STR(IF SUM([Measure]) > 0 THEN SUM([Measure]) END)
// Red label "▼ "+STR(IF SUM([Measure]) < 0 THEN SUM([Measure]) END)
We can then put both of these onto text, then put them side by side in the text editor, formatting them the correct colour. A slightly easier way is with custom number formatting. If we format our [Measure] (right click the pill > Format > select the Pane tab, then select Numbers under the default section and choose custom at the bottom). Positive and negative formatting is separated by a semi-colon in that box so to get the formatting in the above we would need the following:
▲ 0.0%; ▼ -0.0%
We can then just drop a simple boolean SUM([Measure])>0 calculated field on colour and select green and red as appropriate.