The phrase "astonishing shift" is correct and usable in written English.
It can be used to describe a significant or surprising change in a situation, perspective, or trend.
Example: "The astonishing shift in public opinion regarding climate change has prompted policymakers to take immediate action."
Alternatives: "remarkable change" or "stunning transformation".
I think new work needs to address this astonishing shift.
By then the astonishing shift in supply chains had come into sharp focus.
That is an astonishing shift since his childhood days of overwhelming monarchism; no wonder he is nostalgic.
Those eight bars could stand for the astonishing shift in public perceptions about the building, "from a scandal to a world wonder," as Lieben-Seutter puts it.
There has been the most astonishing shift, in the space of a single generation, in the extent of involvement of fathers in child rearing.
He wrote on the Conversation website that for him "the most surprising revelation here at the Paris climate conference has been the astonishing shift in the world of investors over the past 12 months.
The headlines promise an astonishing geopolitical shift.
Some cultural commentators have found it difficult to accommodate to this astonishing paradigm shift.
Wilson believes the warming planet has nothing to do with us, so he must have read some pretty convincing science from some pretty reputable sources to arrive at that serene position – after all, he's advocating nothing short of an astonishing scientific paradigm shift.
The mind has an astonishing ability to shift and swerve from thought to image without much hesitation or difficulty.
People have astonishing, heart-full shifts and awakenings, from incremental to momentous, private to life-upheaving, every week, every hour, 50 more in the time it takes you to read this paragraph.
