The phrase "a dramatic decrease in the number" is correct and usable in written English.
You can use it when discussing a significant reduction in quantity or frequency of something, often in statistical or analytical contexts.
Example: "The report indicated a dramatic decrease in the number of participants compared to last year."
Alternatives: "a significant drop in the number" or "a sharp decline in the number."
On Monday, Mr. Christie said such measures had already led to "a dramatic decrease in the number of walkaways under this administration," referring to escapes from halfway houses.
Cushman & Wakefield's senior director, Frank Caccavo, said, "Constraint on future industrial development and a dramatic decrease in the number of manufacturing jobs statewide are rapidly changing the landscape of industrial inventory".
After the anti-Spanish riots of 1969, there was a dramatic decrease in the number of resident Europeans in Bata, followed by severe economic stagnation that extended into the early 1980s.
He said there had been a dramatic decrease in the number of visitors at parks that tend to be destinations for foreign travelers, like Yosemite and Grand Canyon, but that the number of visitors had jumped at parks easy to reach by car from major population centers, for example, Shenandoah National Park, not far from Washington.
This happened nearly 10 years ago, when Jacques Steinberg reported that Rice University, which had a dramatic decrease in the number of black and Hispanic students after a ban on affirmative action was imposed, changed its tactics to maintain a diverse student body.
The inhibition of VEGFR-1 results in a dramatic decrease in the number of capillary connections, indicating that VEGFR-1 ligands promote branching angiogenesis.
Importantly, there was a dramatic decrease in the total number of unique errant sequences acquired with increasing phred cutoffs.
with M38-tetramer-saporin, a dramatic decrease in the total number of M38-specific CD8± T cells was observed.
A dramatic decrease in the incidence of asthma in their kids.
A dramatic decrease in the emitted circular polarization is observed as the excitation energy increases.
"This visualization reveals the intensity of the event," they note "manifested in the sudden dramatic decrease in the number of photos and their different colors after the power went out.
