To be fair bitcoin has went up around 100USD in the last little while so in USD terms DGB has not really went down from 60sat.
I think in BTC, not USD usually. Look at DGB alltime chart. Below 50 sat. was extremely rare for many months, no matter how BTC behaved.
As long as BTC keeps trending up most if not all other cryptos will suffer. JMHO. The other day when I looked at Bittrex their most active trade screen showed 19 of 20 of the most actively traded alts trading down as BTC broke through $700 USD.