Critical reception
Though Bieber's vocal performance was praised, many criticized the album's repetitive tone and lyrical content. At Metacritic, which assigns a normalized rating out of 100 to reviews from mainstream publications, the album received an average score of 57, based on sixteen reviews, indicating "mixed or average reviews".
Rolling Stone listed it among the worst albums of 2020, saying that "Minus “Intentions”, the album is pure filler", saying that it's "so low quality and lacking any inspiration". Writing for AllMusic, Andy Kellman gave the "R&B-pop" album an overall positive review, particularly commending Bieber's vocal skills, describing his falsetto pleas as "neither bitter nor entitled, strictly genuine and adult". Mikael Wood of the Los Angeles Times defined the album as "a low-key set of gentle electro-R&B jams that depicts his relationship with Hailey Baldwin, as a refuge from the unkind world he's still not quite ready to reenter". Noting the trap beats prevalent in the album, Wood commented that "the sprinkling of on-trend trap drums indicate he's [Bieber is] thinking about it, as do streaming-bait guest spots by Post Malone and Travis Scott". Variety's Jeremy Helligar wrote that Bieber "never sounded better, or more in love, but the nonstop bedroom romanticism doesn't leave much room for exploring demons or expressing joy", expanding that Bieber's voice and the production are "flawless", and "his soul is in the right place", but there's "something airless about the album, too, like he could have left the window open a crack to let some sunshine in". Helligar compared the sonic cohesiveness of Changes to that of Ariana Grande's fifth studio album, Thank U, Next (2019).
Rating the album two stars, Rolling Stone's Brittany Spanos defined Changes as a "one-note toast to marital happiness" that is "sweet and tender, but ultimately shallow", stating that the tracks "are not bad, exactly, but they're almost universally forgettable, with little of the catchiness that's been Bieber's hallmark in the past". Spanos called the album as the "honeymoon phase in R&Bieber form", thus "sweet, uncomplicated, and maybe just a bit hard to imagine lasting forever", with Bieber's "charming malleability as an artist" missing. She added that the album is devoid of the "dangerous eroticism" of Bieber's 2013 project, Journals. Insider's Courteney Larocca and Callie Ahlgrim were favourable towards Bieber's "pristine" vocal performance, but dismissed the "subpar" lyrics, concluding Changes is "ultimately a snooze fest". They pointed out "Habitual" as "easily the best track" on the album, while "All Around Me" is "underwhelming" as the opening track. Emma Garland of Vice commented: "Each track is built on a simple hook or a looping beat, in favor of subtle melodies and lots of repetition, that laid back pace gives his voice room to luxuriate, but the songs often fall flat", with "no tension, no build". She highlighted the "formulaic arrangements and wandering melodies", which struggle "to hit home in a major way", like Purpose did.
In a two-star review, Roisin O'Connor of The Independent stated that Changes "isn't so much an album that would rile you to the point of turning it off. Rather, it washes over you, with its mostly average beats and seemingly random cluster of guest features", adding that it is "full of vague platitudes about love from a singer who has yet to grow up". O'Connor concluded that Bieber "hasn't come all that far" since the days of "Baby", as "a number of songs about his new wife Hailey Baldwin are so uninspired that he may as well be declaring his love for a household appliance". Rating the album two stars, Hannah Mylrea of NME wrote that Bieber's "limp comeback" results in a collection of "a knackering, loved-up slog lacking substance", that is "overly reliant on trendy production and profound(ish) romantic proclamations". She added that it is "a disappointing comeback from an artist who has a track record in creating hits", as it is "one romp that never reaches climax". Evening Standard's David Smyth expressed his disappointment in the album's subject matter, but complimented its production: "In fact, so single-minded is his [Bieber] approach this time that it feels like she's [Baldwin] his only intended audience", and thus Bieber's audience at his tour "are going to be underwhelmed by the unchanging, lounging pace of the new material, gently ticking beats and lack of memorable choruses".
Rating the album a 4.5 out of 10, Jayson Greene of Pitchfork wrote that "Changes settles into a middle-distance, stream-friendly murmur that is more sleepy than salacious", adding that its songs "are all cold angles and frictionless surfaces, devoid of intimacy and heat". He pointed out that "nearly every song on Changes resembles every other in tempo, arrangement, and often in lyrics, which seem to be sourced from the same 10 or 15 pastel candy hearts". Writing for Clash, Nick Roseblade opined that the main problem with Changes is that "it isn't exciting or dynamic and suffers from dragging in places", citing the "lack of variation" on the album, as a reason.
In June 2020, Billboard named Changes as one of "The 50 best albums of 2020 (So Far)".
