# How should I use percentage?

I am totally confused as to the right use of "percentage"! I have seen certain of the following in various texts, I do not know whichever I can safely use in my own text, though.

Which of the following is/are absolutely correct, academically speaking?

1. The percentage of x and y
2. The percentages of x and y
3. The percentage of x and of y
4. The percentages of x and of y

Secondly, shall I use plural or singular verbs after it/them? Thank you.

One example on the Merriam-Webster site is:

The percentages of women completing high school and college were 95 percent and 52 percent, respectively.

After looking at several sources, I think this applies best to your situation since you are discussing data.

This would indicate using number 2 in your questions (and adding respectively to be more precise) is the most correct answer.

I could imagine examples may look like this:

• The percentages of x and y were increased and decreased, respectively.
• The percentages of x and y were fifteen and sixty, respectively.
• The percentages of x and y both increased by nine.