According to an ambitious attempt to measure poverty over the long run, with a $2 a day threshold for extreme poverty, adjusted for purchasing power in 1985,
94% of the world’s population lived in extreme poverty in 1820,
82% in 1910 and
72% in 1950.
But in the last few decades things have really begun to change.
Between 1981 and 2015
the proportion of low- and middle-income countries suffering from extreme poverty was reduced
from 54% to 12%.