I$\text{'}$m having trouble with the formula using index, match, and max.

b$2.$ What is the SKU with the highest gross margin? Hint: Use INDEX, MATCH and MAX formulas.

SKUDescriptionSales PriceCostGross MarginGross Margin $\%$DJI$-$AC$2$DJI Action $25193112080\mathrm{.}4008$DJI$-$OM$5$DJI OM $515996630\mathrm{.}3962$DJI$-$AIRDJI AIR $2$S $9996163830\mathrm{.}3834$DJI$-$DSCDJI Action $2$ Dual$-$Screen Combo $5193152040\mathrm{.}3931$DJI$-2$PCDJI Action $2$ Power Combo $3992391600\mathrm{.}4010$DJI$-$OM$4$DJI OM $4$ SE $11972470\mathrm{.}3950$DJI$-$PO$2$DJI Pocket $24392701690\mathrm{.}3850$OSM$-$P$11$Osmo Pocket $2991821170\mathrm{.}3913$OSM$-$A$11$Osmo Action $199125740\mathrm{.}3719$DJI$-$FLPDJI OM Fill Light Phone Clamp $5936230\mathrm{.}3898$DJI$-$P$2$DDJI Pocket $2$ Do$-$It$-$All Handle $9959400\mathrm{.}4040$DJI$-$AIFDJI Air $2$S Fly More Combo $1,7491,0826670\mathrm{.}3814$DJI$-$MI$2$DJI Mini $24492851640\mathrm{.}3653$MAV$-$AR$2$Mavic Air $27994993000\mathrm{.}3755$MAV$-2$IIMavic $21,5999766230\mathrm{.}3896$DJI$-$SMCDJI Smart Controller $7494502990\mathrm{.}3992$DJI$-2$FIDJI Air $2$S ND Filters Set $9962370\mathrm{.}3737$MAV$-$AI$2$Mavic Air $2$ Intelligent Flight Battery $11572430\mathrm{.}3739$DJI$-$MINDJI Mini Bag$+3923160\mathrm{.}4103$DJI$-$FPVDJI FPV Combo $1,2998024970\mathrm{.}3826$DJI$-$MMCDJI Motion Controller $199122770\mathrm{.}3869$DJI$-$FMKDJI FPV Fly More Kit $2991811180\mathrm{.}3946$DJI$-$IFBDJI FPB Intelligent Flight Battery $159101580\mathrm{.}3648$DJI$-$GBADJI FPV Goggles Battery $2918110\mathrm{.}3793$