Question 529359
Original price = $32
Sale price = $28
Decrease = $4 
Decrease%=(Original price - Sale price)*100/(original price)
Decrease%=(32-28)*100/32
Decrease%=4*100/32
Decrease%=400/32
Decrease%=12.5% 
Check
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12.5% of 32 = 32*(12.5/100)=400/100=4
Sale price = original price - discount
Sale price = 32-4 = 28