The phrase "a drastic fall in" is correct and usable in written English.
It can be used to describe a significant decrease in a particular quantity or value.
Example: "There was a drastic fall in the stock market following the economic crisis."
Alternatives: "a significant drop in" or "a sharp decline in".
The Warwick Commission on the future of cultural value found a drastic fall in arts GCSEs ever since Gove downgraded them – a 50% drop in design and technology, drama down by 23%and25%5% fewer taking craft subjects.
The push to boost numbers came at the cost of a drastic fall in quality.
His suggestion comes against the backdrop of a drastic fall in the number of university applications from men.
A drastic fall in the price of oil, Ecuador's largest export, which provides over a third of government revenues, has not helped.
The Organisation of Economic Cooperation and Development said the Reserve Bank should hold off on further cuts or else risk a drastic fall in property value.
Reduced funding from the centre and a drastic fall in construction taxes and land sales have cut local-government income by an average of 15%.
A tendency towards a more drastic fall in analgesics use in MM was noted (Fig. 4).
The initial phase in hypoxic perfusion (<15 min) exhibits a steep increase of ADP contents and ATPase activities and a drastic fall of ATP/ADP ratios in mitochondria, as well as in tissues.
A small feature near 1.39 eV is observed in Fig. 2b in the spectrum of the pseudomorphic sample contacted to the MBE buffers, though a drastic fall of the signal like in metamorphic structure should be expected above 1.36 eV, taking into account a similar band bending near n +-GaAs/substrate interface.
Next is a sinusoidal pattern before a drastic fall from around age 50 months.
A drastic fall of values of laminar and turbulent MIE (MIEL and MIET) with increasing dgap is observed.
