You borrowed $$40112$ six months ago at $8\mathrm{.}6\%$ EAR to finance the purchase of $$70650$ of stock. Assuming your maintenance margin requirement is $10\%$ and that interest is computed on the loan daily $($but paid only when the position closes$),$ how much can the stock price decline $(\%)$ from your purchase price before triggering a margin call?

When giving your answer please write in whole numbers. That is$,$ if the stock may fall $10\mathrm{.}5\%$ please write $10\mathrm{.}5$