$17\mathrm{.}10$ Constructing another Pareto chart. A large hospital finds that it is losing money on surgery due to inadequate reimbursement by insurance companies and government programs. An initial study looks at losses broken down by diagnosis. Government standards place cases into diagnostic$-$related groups $($DRGs$).$ For example, major joint replacements are DRG $209.$ Here is what the hospital finds:

$\backslash$table$[[$DRG$,$Percent of losses$],[104,5\mathrm{.}2],[107,10\mathrm{.}1],[409,7\mathrm{.}7],[116,13\mathrm{.}7],[148,6\mathrm{.}8],[209,15\mathrm{.}2],[403,5\mathrm{.}6],[430,6\mathrm{.}8],[462,9\mathrm{.}4]]$

What percent of total losses do these nine DRGs account for? Make a Pareto chart of losses by DRG$.$ Which DRGs should the hospital study first when attempting to reduce its losses?