What was the percentage of native Americans in the 1600s?

In the 1600s, it is estimated that Native Americans comprised approximately 2 to 3 million individuals living in North America, which represented around 10-15% of the continent's population at that time. However, these figures varied widely by region and specific tribes. The arrival of Europeans dramatically impacted Native populations through disease, conflict, and displacement, leading to significant declines in their numbers throughout the century.