Fact #1: When Columbus is reputed to have discovered America, the people we call Indians or Native Americans constituted 100% of the population of the Americas; today, they are a tiny minority accounting for just 1.68% of all Americans according to the 2010 U.S. Census.
Fact #2: Columbus didn’t discover America. Here’s what he “discovered”:
“During four separate trips that started with the one in 1492, Columbus landed on various Caribbean islands that are now the Bahamas as well as the island later called Hispaniola. He also explored the Central and South American coasts. But he didn’t reach North America, which, of course, was already inhabited by Native Americans, and he never thought he had found a new continent.” (Valerie Strauss, “Christopher Columbus,” The Washington Post, Oct. 14, 2013.)