If the calculation was something you couldn’t possibly get wrong and you can see, for example, that it’s 9% because it’s $90k/$1,000 x 100% I wouldn’t bother. Also if you have limited $ info in the Q so there is only one profit figure you could have chosen, you probably don’t need to (but don’t make careless mistakes).
If, however, any calculation involves more than a simple summation or division I would show. For example 22.6% (104/(321+140))
It’s not necessary to write “x 100%”. Note that to 1 decimal place is enough (especially bearing in mind that the 104, etc will be $000s of $ms).