A bag of candy contains 300 pieces of which 28% are red.

How Many pieces are NOT red

300 = Total candies

28% = Percent of candies that are red

100% - 28% = 72%

72% = Percent of candies that are NOT red

My personal preference for setting up this type of question:

300 - > 100% (Total candies)

___ - > 72% (NOT red candies)

___ - > 28% (Red candies)

Next:

28% = 0.28

300 x 0.28 = 84

84 = Number of candies that are red

300 - > 100% (Total candies)

___ - > 72% (NOT red candies)

84 - > 28% (Red candies)

Now:

300 - 84 = 216

300 - > 100% (Total candies)

216 - > 72% (NOT red candies)

84 - > 28% (Red candies)

216 equals the number of candies that are NOT red.