If Debt to Asset Ratio increases over time:
An increasing Debt to Asset Ratio means the amount of debt the company has compared to its assets is increasing, which can be a bad sign.
If Debt to Asset Ratio decreases over time:
A decreasing Debt to Asset Ratio means the amount of debt the company has compared to its assets is shrinking, which is generally a good sign.
If Debt to Asset Ratio stays the same over time:
An unchanged Debt to Asset Ratio means the amount of debt the company has compared to its assets has remained the same.