The phrase "a striking decline" is correct and usable in written English.
It can be used to describe a noticeable or significant decrease in something, such as numbers, quality, or performance.
Example: "The company reported a striking decline in sales over the last quarter, prompting concerns about its future."
Alternatives: "a significant drop" or "a dramatic decrease."
Scientists have observed a striking decline in Northeast winters.
Its official statistics show a striking decline in enrollment in the upper grades.
Some of the group's local races have had a striking decline in finishers compared with numbers from a year ago.
While RIM's poor satisfaction rating is mirrored by a striking decline in sales in the United States, that relationship does not extend to all brands.
Professor Sir Lawrence Freedman, a leading academic strategist, reports "a striking decline in interest in international affairs at the senior levels of politics.
When the noise suppression chip is turned on, there is a striking decline in background noise while the speaker's voice remains clearly audible.
Even if future events prove duller than these four scenarios suggest, every significant trend points toward a far more striking decline in American global power by 2025 than anything Washington now seems to be envisioning.
Contrariwise, NER deficiency leads to a striking transgenerational decline in replicative capacity and viability of proliferating cells.
Trade trouble has been most apparent in the striking decline in the Baltic Dry Goods Index.
Revenue from advertising was in striking decline last month, compared with February a year ago, and were generally weaker than analysts had expected.
Except for a bit of a rise from 2004 to 2006, it has fallen every year since 1991.In this section Soaring emissions Excuses, excuses Starting to get along Pushing back Good news is no news Extreme recall Leave no veteran behind Magical mystery Palin ReprintsAlthough nobody predicted the striking decline in crime during the 1990s, in hindsight theories explaining it abound.
