Do we use plural of percent when having two percentages? [closed]

Should I use percent or percents here?

"They are reported to be 7 and 8 percent respectively."

Regards.

• This is more a matter of style than grammar. Arguably you could use either. Nov 9, 2019 at 2:28
• @DavidM - Wrong! There are two percentages, but there is only one per 100 constant value. Nov 9, 2019 at 2:37
• As a general rule, we use a plural verb with two or more subjects when they are connected by 'and.' Example: "A car and a bike are my means of transportation." On the same lines, "They are reported to be 7 and 8 percents respectively." I agree, though, that the presence of 'respectively' creates some amount of confusion. Nov 9, 2019 at 6:58
• //They are reported to be 7 and 8 percent respectively.// Can't it be better this way: a) They are reported to be 7% and 8%; b) They are reported to be 7 percent and 8 percent. c) They are reported to be 7 and 8 percents. "Respectively" should be used when two things should be related to two other things for which 'They' is not enough. Nov 9, 2019 at 7:06

1 Answer

No. Seven and eight percent respectively is a perfectly normal way to compare percentages. Here's another example (that I've just made up):

The quantity of lead in municipal drinking water was measured in Paris and Rome. The concentrations were found to be 3 and 5 parts per billion, respectively.

Percent can be alternately written as [parts] per hundred. One would not write parts per billions as it does not make sense (how many billions?), nor would one write parts per hundreds.