'trend persists' is correct and usable in written English.
You can use it when you are talking about something that has been continuing for a long period of time and is still continuing. Example: Despite the overall decrease in sales, the trend of decreasing profits persists.
If this trend persists, the genes for promiscuity could die out.
Whether the trend persists and yields profits for the new wave of investors is hard to predict.
If this trend persists, it may hold back women's emancipation and fuel a sense of insecurity among religious and ethnic minorities.
If this trend persists, fuel prices will come back down and worries of a big "commodity shock" derailing the global economic recovery will retreat.
This tells us that the long-term global warming trend persists, and it was only temporarily slowed because of the prevailing La Niña conditions from 1999 to 2012.
If the trend persists, this country could easily return to the time when the poor were locked out of higher education and college was hardly a given for middle-class families.
Beginning in the late 20th century, many artists became increasingly rock-oriented, both in their sound and in their professional image, and the trend persisted well into the early 21st century.
If the trend persisted in the second half of 2011, it would mark the end of eight consecutive years of declining fatalities among 16- and 17-year-old drivers.
The trend persisted into this year, with condos priced above $2,000 a square foot averaging nearly $5.9 million downtown in the first quarter, compared with $5.6 million uptown, according to the Corcoran Sunshine Marketing Group.
This trend persisted across the key health promoting flavonoids (quercetin, kaempferol, and isoquercitrin).
This trend persisted to day 7, with cell numbers increasing on all surfaces but with a lower rate of cell proliferation on both graphene surfaces.
