“I am wondering what percentage of people in Taiwan are actually for or against being taken over by China?”
Part of the difference in attitude is whether the Taiwanese are former mainland KMT immigrants or whether they are pre-Japanese rule immigrants.
I think a lot of the business relationships with PRC are developed by ex-KMT who have family and cultural ties with areas in the PRC.
The US should never have let Chiang Kai-shek and his followers into Taiwan. Taiwan would already be independent by now had not the KMT perpetuated the fiction for decades that they were the one government of all of China.