Using the high$-$low method, we calculated the following:

Variable cost per unit: $$4\mathrm{.}40$

Total fixed cost: $$12,280$

Assuming a revenue per unit of $$10\mathrm{.}00,$ the break$-$even point number of units is $2,193$ units $($rounded up$).$

At $4,000$ units, calculate the margin of safety as a percentage. Express as a decimal number to five decimal places. Do not use the $\%$ sign. For example, $13\mathrm{.}423\%$ would be input as $13423.$