Question

what percent of 80 is of 25

Answer 1

divide: 25/80 = 0.3125 = 31.25% or 31 1/4%

Answer 2

so one could say that 25 is the 100% thus, what is 80 of that value?

well \(\large \begin{array}{cccllll}
quantity&percentage\\
\hline\\
25&100\\
80&x
\end{array}\implies \bf \cfrac{25}{80}=\cfrac{100}{x}\)