Got a citation for that claim? Because from what I see it's still enormously higher than it was 4 years ago: https://tradingeconomics.com/argentina/inflation-cpi (166% annual rate in Nov 2024, compare with 35.8% annual rate in Nov 2020).
Those are annual (over-the-prior-year) numbers, not monthly ones. When there is a rapid swing like this it makes more sense to look at monthly inflation (a much better approximation of the rate right now), which is at the lowest it's been in four years.
The relevant graph is here: https://tradingeconomics.com/argentina/inflation-rate-mom