In a comment, you wrote
I wasn't familiar with "conducted + of + someone" structure.
There isn't really such a structure. The idiomatic phrases here are
- the noun phrase survey of something (where something is a statistical population such as a group of people or a group of animals or even a set of consumer products)
- the participial phrase conducted by someone
The latter is closely related to the passive voice and is perfectly productive -- it can be used with any verb:
- a ball thrown by one of the children flew across the street
- meals made by my grandmother always tasted best.
Others have suggested that the sentence could have been
A recent survey conducted of its members by the German Chamber of Commerce and Industry in Japan showed that 78 percent of them regard the entry ban as a significant burden to their businesses.
A more straightforward rewording, however, is
A recent survey of its members conducted by the German Chamber of Commerce and Industry in Japan showed that 78 percent of them regard the entry ban as a significant burden to their businesses.
This avoids splitting the participial phrase "conducted by the German Chamber..."
The wording given in the question was likely selected to avoid using the pronoun "it" before the noun that it represents. Another characteristic of the initial wording is that it suggests that "in Japan" is part of the organization's name rather than the location of the members who were surveyed or the place where the survey was conducted.