Total money spent = $526 billion
Money spent on pets = $15.8
[tex]\begin{gathered} \text{Percentage of money spent on Pets} \\ =\text{ }\frac{15.8}{526}\text{ x 100\%} \\ =\text{ }\frac{15.8\text{ x 100\%}}{526} \\ =\text{ }\frac{1580}{526} \\ =\text{ 3.00\%} \\ =\text{ 3.0\%} \end{gathered}[/tex]