\(method\ \#1\\\\\frac{19}{25}\times100\%=(19\times4)\%=\boxed{76\%}\\\\method\ \#2\\\\ \begin{array}{ccc}25&-&100\%\\\\19&-&p\ \%\end{array}\ \ \ |cross\ multiply\\\\\\25\cdot p=100\cdot19\\25p=1900\ \ \ \ \ |divide\ both\ sides\ by\ 19\\\boxed{p=76\ (\%)}\)