Did the allies or the central powers have the higher percentages of casualties during world war 1?

During World War I, the Allies suffered higher percentages of casualties compared to the Central Powers. It is estimated that the Allies experienced around 5 million military deaths and 7 million civilian deaths, resulting in a higher casualty rate relative to their population. In contrast, the Central Powers had approximately 4 million military deaths and around 2 million civilian deaths. Overall, the Allies faced a larger proportion of losses in relation to their total population.