Karina owns a boutique where she sells designer dresses. She purchases the dresses for $$290$ each and has a rate of markup of $33\mathrm{.}00\%$ on selling price. At the end of every season, she has a sale and marks down the dresses to sell them at the break$-$even price. If the overhead expenses are $13\mathrm{.}00\%$ of the regular selling price, calculate the rate of markdown on these dresses.

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Round to two decimal places