> Every tenth man in a group was executed by members of his cohort
That is a 10% reduction. Killing nine out of ten would be a 90% reduction but 'in the classical sense' it would also mean that the lucky guy would have to kill the 9 remaining people.
That is a 10% reduction. Killing nine out of ten would be a 90% reduction but 'in the classical sense' it would also mean that the lucky guy would have to kill the 9 remaining people.