Final answer:
The percentage of Western Europeans who were serfs varied depending on the region and time period. Generally, serfs made up the majority of the population.
Step-by-step explanation:
In medieval Western Europe, the percentage of serfs varied depending on the region and time period. Generally, serfs made up the majority of the population. For example, in England in the 11th century, about 10% of the population were freemen, while the rest were serfs. In France during the 14th century, the percentage of serfs increased to around 90%. In Eastern Europe, the percentage could be even higher, such as in Russia where about 95% of the population were serfs.
Learn more about Serfs in Western Europe