"Per-capita" means "per person".

If ten people eat ten cheeseburgers, that's ten people having lunch. Per capita, per person, one person eats one cheeseburger. If a different group has five people eat ten cheeseburgers, that's five people having a large lunch. Per capita, per person, one person eats TWO cheeseburgers in that second group.

If you have those two cheeseburger-eater groups, and you're planning on making a lunch for them... Is it going to be more expensive for you to make that lunch if you plan to invite more people from the first group, who eat one cheeseburger per person, or the second group, who eat two cheeseburgers per person, if they're otherwise perfectly identical groups?

Put to a real-world example, if you had to be in a densely packed group of ten people, and all you know is that of the two choices of groups to be packed in with, one group was shown with ten people to arbitrarily kill one person, that is, they have 0.1 murders per capita, 0.1 people killed per person in the group, and the OTHER group you checked had one million people in it, and had 100 murders, that is, 0.0001 murders per capita, 0.0001 people killed per person in the group, which group would you trust more, if all other factors were the same?

Of course, that is assessing and pre-judging someone based on objective provable statistics. Which some people disagree with. Some people say if you see someone coughing and wheezing while yelling "I have COVID!", that they really just need a hug and french kiss, that we shouldn't pre-judge that person for their traits that they are exhibiting to us and treat them like they're sick. Others say that, per capita, a really, really high % of people who show those traits might have COVID, and you probably want at least a mask and some hand sanitizer.

"Per-capita" means "per person".

If ten people eat ten cheeseburgers, that's ten people having lunch. Per capita, per person, one person eats one cheeseburger. If a different group has five people eat ten cheeseburgers, that's five people having a large lunch. Per capita, per person, one person eats TWO cheeseburgers in that second group.

If you have those two cheeseburger-eater groups, and you're planning on making a lunch for them... Is it going to be more expensive for you to make that lunch if you plan to invite more people from the first group, who eat one cheeseburger per person, or the second group, who eat two cheeseburgers per person, if they're otherwise perfectly identical groups?

Put to a real-world example, if you had to be in a densely packed group of ten people, and all you know is that of the two choices of groups to be packed in with, one group was shown with ten people to arbitrarily kill one person, that is, they have 0.1 murders per capita, 0.1 people killed per person in the group, and the OTHER group you checked had one million people in it, and had 100 murders, that is, 0.0001 murders per capita, 0.0001 people killed per person in the group, which group would you trust more, if all other factors were the same?