When grading papers or using it in economic terms
It might be easier to use the percent equation rather than the percent proportion when you are multiplying and dividing.
A stock broker uses percent of change. Almost any buisness might use it to calculate the money gained over a certain period of time.
I am not aware of anything that might be termed a square percent.
You might use a toothbrush. You might use soap. You might use a sponge. You might use a towel. You might use a facecloth. You might use a facewash. You might use water.
The Details is 100%
100%
92% might be an A, but likely an A-.
When Percent Equal 100%
It might be somewhere close to the "Help" options.
50 percent
40 - 60 percent
5-to-7 percent