If Return on Total Assets increases over time:
An increasing Return on Total Assets (ROI) usually shows the company has been more able to use the investments in the company (the Total Assets) to generated income (Net Earnings) back to the company.
If Return on Total Assets decreases over time:
A decreasing Return on Total Assets (ROI) usually shows the company has been less able to use the investments in the company (the Total Assets) to generated income (Net Earnings) back to the company.
If Return on Total Assets stays the same over time:
An unchanged Return on Total Assets (ROI) usually shows the company''s ability to use the investments in the company (the Total Assets) to generated income (Net Earnings) back to the company has remained the same.