、。
It really has changed dramatically, hasn't it.
Literal
Truly, drastically [adverbial-と] changed-[for-me-てくれた]-[polite] [agreement-ね].
がらり is a 擬態語 (state mimetic) for a dramatic, total change — a sudden 'complete flip' in state, often said approvingly of a welcome transformation. The adverbial particle と marks it as modifying the verb 変わる. ~てくれる adds the benefactive nuance that the change is appreciated as a favor to the speaker. Final ね invites agreement. Subject omitted.