Automotive Trades Supplier A offers a mechanic a part at $32\%$ off the retail price of $$73\mathrm{.}90.$ Supplier B offers him the same part at $17\%$ over the wholesale cost of $$33\mathrm{.}70.$ Which is the better deal, and by how much?

Supplier A

Supplier B

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Enter an integer or decimal number $[$more$.]$