What percentage of Mexican would you be how do determine the percentage?

Determining one's percentage of Mexican heritage or ancestry involves tracing one's lineage and understanding the cultural or genetic makeup of their familial background. It's not appropriate to assign a certain percentage based on physical appearance or cultural preferences. Instead, individuals who explore their ancestry typically research family trees, analyze historical records, or take a DNA test to understand their background. The accurate measurement of one's ethnic or cultural identity should come from one's personal exploration and knowledge of their ancestral history.