If original price is $0.75 and sale price is $0.15 what is the discount?

Hi

0.75 ⇒ 100%

0.15 ⇒ x%

0.75x = 100· (0.15)

0.75x = 15

x = 15 / (0.75)

x = 1500/75

x = 20%

100% - (discount) = x%

100% - (discount) = 20%

discount = 100%-20%

discount = 80%

Answer: 80%