The price of DGB might be going down but the value of the coin is not going down as fast because bitcoin price is going up, those holding bitcoin are benefitting and can get in at lower prices,if bitcoin price goes back over 500 USD a lot of coins will drop down in price but not as much in value. For those saying 1 Sat is the lowest, it's not, a coin trading pairing can then be dropped for LTC and go below 1 sat. This has occurred a lot with very high supply coins that are hopeless. I never expect 1 sat for DGB of course!.
You are right. DigiByte's price may be going down, but once Bitcoin price is stabilized at its high, then those coins dropped including DGB will rise again! So there is no point of selling any DGB. Just be patient, DGB is as safe as Bitcoin