"has likely changed" is correct and usable in written English.
You can use this phrase to describe something that has probably changed since a previous time. For example, "The world we live in today has likely changed much since your grandparents were young."
A poll taken last April indicated 93% of Russians didn't know who Navalny was (although that figure has likely changed significantly since the December protests).
I recall it, albeit vaguely, as being overwrought, though my sense of how much wreaking or working is apt has likely changed in the intervening years and I'm interested to see it again.
The legislation legalized funding in startups by non-accredited investors and has likely changed early-stage investing for good.
Recharge to the Trans-Pecos basins is spatially and temporally variable, and due to human impacts it has likely changed since pre-western settlement time (circa 1850s).
As I soon discovered, Oliver inspires those around him with his vivacity, talent, and enthusiasm for science, and has likely changed the direction of more students than myself.
What has likely changed is that your adviser has professionally matured to the point where he now sees that index funds are the best way to address client's needs.
Present results showed that most fishes have likely changed their feeding behaviour compared to past studies from the same area.
Although those figures have likely changed as the bill has been modified, the message is the same: The government-sponsored mortgage buyers would be on the hook for a hefty sum of money.
After all, for many Pinterest users, their social graph on the site may have initially started off as a duplicate of Facebook's, but today, Pinterest users' social graphs have likely changed and grown because Facebook and Pinterest are used for different purposes.
Researchers in Hawaii found that guppies released in the 1920s drove down native fish populations, perhaps by competing with them for food and living space, and had likely changed the cycle of nutrients in water: Guppy-rich areas showed increased levels of dissolved nitrogen from ammonium in fish urine and gill excretions which, in turn, stimulated algae growth.
Philosophically speaking, whatever changes I might make -- given the opportunity to go back and make them -- would have likely changed the path of my life to a point where I would not be the same person as I am today.
