The phrase "altered almost" is correct and usable in written English.
It can be used when describing something that has been changed to a significant degree, but not completely.
Example: "The design was altered almost beyond recognition after the latest revisions."
Alternatives: "changed nearly" or "modified almost".
Childbirth practices have altered almost beyond recognition in the past 100 years.
The air campaign has altered almost every facet of daily life.
I am not writing in self-pity, but, I hope, objectively when I say that I personally have altered almost unbelievably within two years.
Humans have created at least 50 dead zones in the sea with little or no oxygen - and altered almost half of the land surface of the planet.
LEIPZIG, Germany — While it's impossible not to think of Johann Sebastian Bach as you walk through this city, where he spent the final decades of his life, what little remains of his world here has been altered almost beyond recognition.
And English top-flight football – thanks largely to Sky's investment, combined with the changes that flowed as a result of the Hillsborough disaster – has been altered almost beyond recognition.
Until recently anyone could alter almost any entry in Wikipedia.com without even revealing who they were.
The virus also changes so frequently that scientists have to alter almost yearly the vaccine to protect against it.
It alters almost everything managers do, from finding suppliers to co-ordinating projects to collecting and managing customer data.
There is much scope: unlike earlier boom technologies, such as the railways, IT has the capacity to alter almost every corporate activity.
If the judge adopted Microsoft's proposal, Mr. Kuney described how she would need to alter almost every single point to make it effective, until the final product sounded a lot like the states' original proposal.
