Complex sentence: Spanish Filipinos with at least some Spanish or Hispanic ancestry comprise 27-30% of the Philippine population, totaling up to roughly 27 to 30 million people; and there are approximately 5 million Filipinos with pure Spanish ancestry, or around 5% of the population.
Split into simpler sentences: Spanish Filipinos with at least some Spanish or Hispanic ancestry--comprise 27-30% of the Philippine population, totaling up to roughly 30 million people. There are approximately 5 million Filipinos with pure Spanish ancestry, or around 5% of the population.