"suggested changes to" is correct and usable in written English.
You can use it when you want to propose that something be altered or improved. For example: "We suggest changes to the employee bonus structure that would better recognize performance."
DANIEL ALTMAN Correction: October 23, 2005, Sunday Because of an editing error, an article last Sunday about a presidential panel's suggested changes to the income tax system referred imprecisely to a suggested cap on the home mortgage tax deduction.
John Redwood, for instance, has suggested changes to energy policy, while David Davis has proposed a prisons reform agenda.
Some have suggested changes to limit the federal government's ability to use the money to expand existing national parks.
Before agreeing to commit, Mr. Halbritter, no pushover, suggested changes to a script that had been written by Bob Burris.
Steven Ter Heide talks about how Guerrilla's key concerns were the ergonomics – they suggested changes to the triggers, adding an outward curve for better tactile feel.
Mr. Cardozo, representing Mayor Michael R. Bloomberg, suggested changes to the nominating conventions rather than the use of open primaries in choosing judicial candidates.
An interim report released by the inquiry recommended the creation of a new code of practice for post mortems, and suggested changes to the law.
This discord, or disconnect, is more important for the White House to try to address than the other suggested changes to the Obama presidency.
In it, the business lobbying group reiterated many of its criticisms of the Foreign Corrupt Practices Act and suggested changes to the law and guidance.
In 2008, the Federal Reserve Bank of New York suggested changes to the process, after learning that Barclays reported artificially low rates, according to documents.
In November (following Nixon's reelection), Kissinger returned to Paris with some 69 suggested changes to the agreement designed to satisfy Thieu.
