According to the latest census data, there are about 9.6 million people living in Hungary. At the same time, as per the 2022 summary of the Immigration Office (OIF), about 430,000 foreigners have some kind of residency in Hungary. This includes the 161,000 people with an EU registration card as well as the 162,000 people with a Hungarian residence permit. Unfortunately, the summary does not tell us how many of those residence permits were issued for employment purposes (so complete with work permits).
In 2022, the number of new residency applications was around 135,000, out of which 85,000 were requested for employment purposes. This is in line with the above data, since work permits are typically issued for 2 years, after which they can be renewed.