Determining whether to sell assets at a loss or take further losses depends on several factors, including:

1. **Market Analysis**: If there are strong expectations that prices will continue to decline, it may be better to sell now to avoid greater losses in the future.

2. **Personal Strategy**: Some traders prefer to wait and hold assets in the hope that the market will recover in the future, especially if they believe in investment fundamentals and believe that the decline is temporary.

3. **Risk Tolerance**: If an investor is unable to bear larger losses or if those assets make up a large portion of his portfolio, selling at a loss may be a logical decision to avoid larger losses.

4. **Time horizon**: Long-term investors may be more inclined to hold onto their assets even in times of decline, compared to short-term investors who may need quick liquidity.

In general, the decision depends on the trader's assessment of risks, future market expectations and personal financial situation.