I recommend Barbara Tuchman’s great book on the effect of the plague on Europe titled “A Distant Mirror”. Informative read.
I am currently reading A Distant Mirror, and read Journal of the Plague Years a decade ago. They estimate the initial death toll from the 1347 plague arrival was about 1/3rd of Europe although there were cities, towns, and villages where it was 80 to 100%. By the 1360s about 60% had died, and at the end of the century Europe had only 1/2 the population it had at the beginning of the century.