Litchfield Products, a smallish distribution center in Bermuda, carries $11,500$ SKUs$/$items$.$ During any particular week in the company's operations, Litchfield Products' customers $($mostly organic grocers$)$ order about $4,350$ different SKUs from the facility. On average, Litchfield Products only satisfies all demand for $2,100$ items. The out$-$of$-$stock probabilit here is

$\%$

Round up to the nearest whole $\%$ for credit $($use numbers only, do not add the $\%$ or decimal sign please$).0\mathrm{.}517241379310345$