Question

The price of a technology stock has dropped to 9.68 today. Yesterday's price was 9.77. Find the percentage decrease.

Answer 1

well, the difference is just 9.77 - 9.68 = 0.09.

If we take 9.68(origin amount) to be the 100%, what's 0.09 off of it in percentage?

`\begin{array}{ccll} Amount&\%\\ \cline{1-2} 9.68 & 100\\ 0.09& p \end{array} \implies \cfrac{9.68}{0.09}~~=~~\cfrac{100}{p} \\\\\\ 9.68p=9\implies p=\cfrac{9}{9.68}\implies p\approx \stackrel{\% }{0.93}`