The phrase "a rapid decrease in the number" is correct and usable in written English.
You can use it when discussing statistical data or trends that show a quick decline in quantity or frequency.
Example: "The report indicated a rapid decrease in the number of participants over the last year."
Alternatives: "a swift decline in the number" or "a quick drop in the number."
Witnessing a rapid decrease in the number of senior managerial roles also makes me worry about my own career trajectory.
Evaluation of the overall viability drop of bacteria within a box-type chamber is difficult because of a rapid decrease in the number of bacteria caused by collision with the wall/fan and natural decrease.
In-frame deletion of residues 72 100 in MotBC causes a rapid decrease in the number of stators at a motor load much higher than that at which the wild-type stator begins to dissociate from the motor, and it has been proposed that MotBC may regulate the assembly and disassembly dynamics of the stators in response to load changes19.
These led to a rapid decrease in the number of hysterectomies performed.
For the observed AMI hospitalizations, there is a rapid decrease in the number of additional people identified with an AMI admission, as one looks further back in time.
A rapid decrease in the number of thermoresistant CFUs was observed during the first few days, reaching a steady density of approximately 4.5 5 log CFU/L after less than five days.
The regression model in Figure 3B shows a rapid decrease in the predicted number of new genes discovered for each new B. burgdorferi genome sequenced.
This may have resulted from a rapid decrease in the pH of the medium, which resulted in enormous numbers of dead cells.
A significant increase in the number of leukemic cells measured in the blood of the treated was also observed, suggesting a rapid decrease in the white cell infiltration in these organs.
We found a marked and rapid decrease in the number of retinal rosettes, which was accompanied by an increase in the number of AF spots (Fig. 5I,J).
The rapid decrease in the number of farmers is a serious social concern in Japan, and suggests a need for rice that can be cultivated more easily by the remaining farmers.
