the number of people beliving a idea is irrelevent , the idea is the truth or it is not the truth , it is independant of both the people and belief.
if creation is the truth , it matter not that 0% , 50 % or 100% of the worlds population belive in it .
the same goes for evolution .
your use of the word FOLLOWERS is i think key here, knowleged outside our personal experience , and our personal intellectral apptitudes , has to be take on trust and our ability to conceve the idea .
religions set out to gather FOLLOWERS who have faith , and trust in the creed, science does not .
religions set out to convert people to thier view of the world , science tends to dump infomation in to the public domane.
religions are far far better at communicating ideas to and building trust relationships that science .