Approximately what percentage of the population of Europe died as a result of the plague

50%

Explanation:

The Black Death, brought about by the bacterium Yersinia pestis, cleared out 30 to 50 percent of Europe's populace somewhere in the range of 1347 and 1351. Yet, this is only the most notorious of the little microorganism's dirty tricks

30% to 50%

Explanation:

The Black Death, caused by the bacterium Yersinia pestis, wiped out 30 to 50 percent of Europe's population between 1347 and 1351. But, this is just the most infamous of the little microbe's shenanigans