Incorrect values of the area calculated from the 'Calculate Geometry Attributes' tool in ArcGIS Pro.

Workaround

Run the 'Calculate Field' tool with the following expression (!shape.area@acres!) to get the correct results matching to the 'Measure' tool. The following documentation also describes the Calculate Field examples for calculating geometry unit conversions, refer to the following link, https://pro.arcgis.com/en/pro-app/tool-reference/data-management/calculate-field-examples.htm.

Steps to Reproduce