How many people died from the 14th century black death?

The Black Death was one of the most devastating epidemics in human history. It was the first outbreak of medieval plague in Europe, and it killed tens of millions of people, an estimated 30–50% of the European population, between 1347–1351.

Source: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4013036/