What percentage of the Periodic Table of Elements is Metals?

80 percent

About 80 percent of the elements are metals (shiny elements that conduct heat and electricity well), and 15 percent of the elements are nonmetals (poor conductors of heat and electricity). The remaining elements are metalloids, which share properties of both metals and nonmetals.

80% of the Periodic Table consists of metals and 15% non-metals and 5% other elements.

Explanation:

icc, international association for cereal chemistry