Geography: world percent urban vs rural

Self-tutoring about geography: the tutor notices an article about percent world population now living in urban settings.

Apparently, in 1960, the world was 2:1 rural to urban. As I understood, when I was a kid, most people on Earth lived by subsistence agriculture. Even in North America, some people still did. My conception is that subsistence agriculturalists are typically rural, so when they dominated the world population, it, too, had to be.

Today, however, with the world developing, subsistence agriculture is waning in favour of the cash economy. Such must be the case: 55% of the world is now urban, according to the source I read this morning.

Source:

ourworldindata.org