Question

In January, a bookstore sells 450 books, but in February, it sells only 300 books. What is the percent of change from January to February?

66.7%
-33.3%
50%
-50%

Answer 1

January : 450 books
February : 300 books

the difference of Jan to Feb = 300 - 450 = -150
the percent of change = -150/450 x 100% = -33,3 %

Answer 2

- 33.33%

Explanation:

Given,

The number of books sold on January = 450,

While, the number of books sold on February = 300

Thus, the percent of change from January to February =
`\frac{\text{books sold on February-books sold on January}}{\text{books sold on January}}* 100`

`=(300-450)/(450)* 100`

`=-(15000)/(450)`

`\approx -33.33\%`

Second option is correct.