I want to know the answer to the following question:
How much of the population must have been in favor of the revision?
All the background I'm provided with is that "Moreover, in territories or parts of territories whose affiliation with a Land had changed after 8 May 1945 without a referendum, people were allowed to petition for a revision of the current status within a year after the promulgation of the Basic Law (paragraph 2).". Is that enough to answer the question?
Answer: no