RAGE!!!!

I'm just venting, but I submitted my task two, and it was returned because the ROI "wasn't calculated correctly". I rounded it to the next whole percentage and cut out the decimals. Unless there was a blurb about how many decimal points you need on an ROI that I missed, they are jerking me around. So now what do I do? Leave the decimals out to the thousands? Round up to the hundreds, and put (rounded to 2 decimal places)? I feel like they could have been clearer about what they expected, and the grader didn't elaborate on how many decimal places she wanted, either.