You can argue that national poverty lines are made to be kept under a certain percentage, sure, then we can ignore that. Globally, yes, the majority doesn't have capital (as in financial capital), but per country, there are stark differences. More things to consider
Especially GNI PPP: if you live in Europe, North America, Australia, China, Japan, and a few other countries, there's a good chance you belong to the global 20% of high income earners. The minimum wage in your country will probably be higher than what a low income family earns in a year
For the current 2024 fiscal year, low-income economies are defined as those with a GNI per capita, calculated using the World Bank Atlas method, of $1,135 or less in 2022; lower middle-income economies are those with a GNI per capita between $1,136 and $4,465; upper middle-income economies are those with a GNI per capita between $4,466 and $13,845; high-income economies are those with a GNI per capita of $13,846 or more.