Webber Technologies is an emerging manufacturer of $3\mathrm{.}5$ inch diagonal touch screens for mobile communication devices$/$media players. $2011$ industry sales were reported at $17\mathrm{.}66$ million units. This number represents an $18\mathrm{.}5\%$ increase over $2010$ industry sales. Webber Technologies had a $2010$ market share of $5\mathrm{.}7\%,$ compared with a $2011$ market share of $4\mathrm{.}4\%.$ What was change in unit sales for Webber Technologies, from $2010$ to $2011,$ attributable to its change in market share? Report your answer in individual units.

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