Report Manager is publishing default values of 1,000 or (1,000.00) for all rows/columns?

When attempting to export report manager output in excel format, the output is generated, albeit I have to update my ActiveX internet option settings first, but the output returns defualt values of 1,000 positive and (1,000.00) negative values against every line for every column - Is there a setting I need to change to make the report read the actual output?