Question

In February, Alec had 1,574 visitors to his website. In March, he had 1,381 visitors to his website. What is the percentage decrease of the number of visitors to Alec's website from February to March? If necessary, round to the nearest tenth of a percent.

Answer 1

from 1574 to 1381 the difference is 193.

now, if we take 1574 to be the 100%, what is 193 off of it in percentage?

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 1574&100\\ 193&x \end{array}\implies \cfrac{1574}{193}=\cfrac{100}{x}\implies x=\cfrac{193\cdot 100}{1574} \\\\\\ x\approx 12.261753494~\hspace{7em}\stackrel{rounded~up}{12.3}$