Harvey Balls are a repeating pattern of simple pie diagrams to score options among different access. Strategy consultants love them because it allows you to make qualitative assessments quickly. They work great on group discussion whiteboards as well: draw the empty circles and have the meeting participants colour them in.
Apparently they were invented at Booz Allen in the 1970s, which is probably why we at McKinsey referred to them as "moons".
In PowerPoint they are a bit tricky to make, in the template below I tried to make an effort. To change the values, you need to open each pie diagram and change its value, make sure that you are not moving or re-scaling any of the pie diagrams in the process.
At McKinsey, I remember always keeping a "moon" diagram somewhere in my hard drive, so I could easily re-use the various shapes (these were not Excel pie diagrams, but graphic icons that came in the four stages).
Visually, I think they are not perfect. Maybe in the early 1990s, with primitive computer graphics, Harvey balls served a purpose, but now the same effect can equally be achieved by applying different colour shadings in the background colour of the cells in your table.
As always, feel free to copy the design, or download the ready-made slide from the template store.