Answer:
42.6%
Explanation:
Initial price of the iPhone = $938.99
Final price of the iPhone = $538.99
Decrese in price = $(938.99 - 538.99 )
= $ 400 .
We can calculate decrease in percentage by ,
= Decrease / Initial price * 100
= $400/938.99 * 100
= 42.59%
= 42.6% ( nearest tenth)
Hence the required answer is 42.6% .