The phrase "drastically declined" is grammatically correct and commonly used in written English.
It is typically used to describe a significant decrease or drop in something, such as a quantity, value, or trend. Example: The company's profits drastically declined after the new CEO took over.
As in other areas, activity drastically declined after ca. 300 cal BP (Supplementary Table S1).
Even in the relatively recent past, the area of land over which these animals roamed has drastically declined.
But even in areas that never drastically declined, the image that infected the Bronx in the '80s has held on.
In a budding ecological crisis, the oyster population has drastically declined in Apalachicola Bay, one of the country's major estuaries and the cradle of Florida's prized oyster industry.
As for the Tibetan spiritual leader, Mr. Guo asserted today that "public support for the Dalai Lama has drastically declined" and that he is seen by most residents as a "schemer, a split-ist and an opportunist".
He says that throughout the 1980s, cricket was growing in popularity under the dynamic leadership of Imran Khan, and, after Pakistan's cricket World Cup victory in 1992, the talent pool available to hockey drastically declined.
Women and men are most fertile in their early 20s, while female fertility drastically declines after 35.
In truth, steel imports have been drastically declining since the glut caused by the Asian financial crisis.
The Hornets' owners said they needed to relocate to avoid losing millions of dollars annually, in part from drastically declining attendance.
At the same time, legal aid funding is drastically declining, while the legal needs of those living in poverty are dramatically increasing.
— World Bank predicts coal use will drastically decline in the next 30 years: "The model has been coal plus renewables, the model can be gas plus renewables.
