Round to the nearest percent.

$10 discounted to $7

-30%

Step-by-step explanation:

Do 7/10 to get the decimal of 7 to 10, then move the decimal forward two places to get the percent for 7/10, 70%. Next you'll need to figure out the difference between 100 (%) and 70 (%) with 100-70 which = 30, so the price decreased by 30%.