well, if we take $100 to be the 100%, and then it went up by $150, how much is $150 off of it in percentage?
[tex]\bf \begin{array}{ccll}
\${data-answer}amp;\%\\
\text{\textemdash\textemdash\textemdash}&\text{\textemdash\textemdash\textemdash}\\
100&100\\
150&x
\end{array}\implies \cfrac{100}{150}=\cfrac{100}{x}\implies x=\cfrac{150\cdot 100}{100}[/tex]
