If the best operating level of a piece of equipment is at a rate of $400$ units per hour and the actual output during an hour is $300$ units, which of the following is the capacity utilization rate?

Multiple Choice

$0\mathrm{.}75$

$1\mathrm{.}00$

$1\mathrm{.}33$

$2\mathrm{.}33$

$300$