A Communist Genocide (with a similar nature as this one) happened in Cambodia it wipes out a quarter in 4 years. China was attacked by another Communist Revolution earlier (consisting mostly of Antifa-esque killer Rampages) and it only wiped out 3M - 10M of 700M-ish of people in 1 decade.
However, considering that the methods of killings done in this particular attack uses similar methods as the Cambodian Genocide with a far more subtle and insidious nature, it should come no surprise that the results are close to the same.
Population density.
A Communist Genocide (with a similar nature as this one) happened in Cambodia it wipes out a quarter in 4 years. China was attacked by another Communist Revolution earlier (consisting mostly of Antifa-esque killer Rampages) and it only wiped out 3M - 10M of 700M-ish of people in 1 decade.
However, considering that the methods of killings done in this particular attack uses similar methods as the Cambodian Genocide with a far more subtle and insidious nature, it should come no surprise that the results are close to the same.