The phrase "altered the perception of" is correct and usable in written English.
You can use it when discussing how something has changed or influenced the way people view or understand a particular subject or concept.
Example: "The documentary altered the perception of climate change among viewers, prompting many to take action."
Alternatives: "changed the viewpoint of" or "shifted the understanding of".
The early-music movement altered the perception of how works like this should sound.
He added that he hoped the team's recent rise altered the perception of Dolan.
The three-hour House vote and passage of the Medicare bill altered the perception of Mr. Hastert in Washington, where he had been widely seen as an amiable, almost invisible sidekick to Tom DeLay, the House Republican leader.
With Clarke calling time on his ODI career the day before the final, he came under fire for the timing of his announcement, yet victory helped to cloud collective memories; indeed the result may have altered the perception of Clarke, who despite his standing in the game has never enjoyed an entirely harmonious relationship with the Australian cricketing public.
This is actually something we have been hearing from companies since at least 2009 when the iPad really altered the perception of how software should work.
In the first case we measured how adaptation to the characteristic "blur" in medical images altered the perception of blur, by testing how adaptation to the original or filtered images biased the perceived amplitude spectra of the images.
Synesthesia, a cross-wiring of the senses that causes people to taste words and see noises, has altered the perceptions of visionaries like Vladimir Nabokov and Stevie Wonder.
This must have altered the perceptions of these staff members about clinical care imperatives and rules.
New events alter the perception of previous ones.
And the film director can significantly alter the perception of a production.
In Fiji, rugby is used as a tool to help alter the perception of people living with disabilities.
