Endangered Languages Revisited

I have been puzzling over the statement: "97 percent of the world’s population speaks about 4 percent of the world’s languages; and conversely, about 96 percent of the world’s languages are spoken by about 3 percent of the world’s people." I cannot get my mind around this concept.....It seems that the percentages should be the same. So I thought if I drew a Venn Diagram I could understand it. Then I remembered I failed several math classes. Can someone draw a simple diagram that shows the relationship of a countable binary homogeneous structure with finite signature? It appears to me that the essential criterion must be world population is to number of languages as % of people is to % of languages. But this would make one think the numbers should be directly and inversely the same. Wouldn't this make the overlaps indivisible and the outer orbits form a chain? But this immediatly raises the question, in my mind at least, that the generalised Urysohn spaces forms unequal examples and show that the situation for infinite signature is quite different. If anyone out there got through "Intro to Numbers 101" ...... help me out.