Queueing system $\backslash ($ A $\backslash )$ has a utilization of $\backslash (80\backslash \%\backslash ),$ and queueing system $\backslash ($ B $\backslash )$ has a utilization of $\backslash (90\backslash \%\backslash ).$ Both have a single server and the same level of arrival and service variability. Say the utilization of both systems increases by $5$ percent; that is A increases from $\backslash (80\backslash \%\backslash )$ to $\backslash (85\backslash \%\backslash )$ while B increases from $\backslash (90\backslash \%\backslash )$ to $\backslash (95\backslash \%\backslash ).$ Which system is likely to experience the bigger change in the average time in queue?

$($Difficulty Level $-$ Medium$)$