The phrase "a greater decline" is correct and usable in written English.
It can be used when comparing the extent of a decrease in a particular context, such as economics, health, or any measurable quantity.
Example: "The latest report indicates a greater decline in sales this quarter compared to the last."
Alternatives: "a more significant drop" or "a larger decrease".
"Without it, the market would have suffered even a greater decline".
But Dr. Gilbert's study, using a different analysis method, found that Avastin increased the burden of symptoms and led to a greater decline in cognition.
The recession caused a greater decline in gross domestic product in the United States than any American downturn since World War II.
If only big publicly traded companies were to suffer, the decline would be less; if the rest of the economy were more vulnerable, there would be a greater decline.
A recent study found that couples reported a greater decline in relationship quality over the first four years of their marriage when the wife was a narcissist (interestingly the same result was not found when the husband was a narcissist).
Molecular weight was also affected, with a greater decline seen at fatigue.
Previous Biome-BGC simulations in Oregon suggest that both NPP and Rh have declined in recent decades, with a greater decline in NPP [64].
If you think I am too optimistic and expect a greater decline, you can protect yourself by buying a put option on the S&P 500.
This is going to clamp operating margin, putting it down to 6% to 8%, which is a greater decline than its earlier outlook of 5% to 6%.
To examine whether preanesthetic administration of enalapril, compared with placebo, results in a greater decline in blood pressure (BP) or decreased responsiveness of BP to isotonic fluids or vasopressors in healthy dogs during isoflurane anesthesia.
Leaves developed under moderate shade displayed a lower ability to preserve water balance, thus suffering from a greater decline in net CO2 assimilation than leaves acclimated to full sunlight, when subsequently exposed to drought stress.
