Your parents will retire in $19$ years. They currently have $$300,675,$ and they think they will need $$1,532,576$ at retirement. Assuming they don't save any additional funds, the annual interest rate they must earn to achieve their goal would be $\_\_\_\_\_\_\_\%.$

Margin of error for correct responses: $+/-\mathrm{.}03(\%).$

Rounding and Formatting instructions:

Do not enter dollar signs, percent signs, commas, X$,$ or any words in your response. Do not round any intermediate work, but round your $*$final$*$ response to $2$ decimal places $($example: if your answer is $12\mathrm{.}3456,12\mathrm{.}3456\%,$ or $$12\mathrm{.}3456,$ you should enter $12\mathrm{.}35).$