Question

Last year, the seventh-grade enrollment at Main Middle School was 612 students. This year, the enrollment dropped to 489 students due to the opening of a new middle school. Which best reflects the percent change in enrollment at Main Middle School from last year to this year?

Answer 1

The percent change in enrollment at Main Middle School was about 20%

Explanation:

Percentages

There was a change of enrollments in the 7th grade at Main Middle School from 612 to 489 due to openings of a new school.

The change in the number of enrollments was 612 - 489 = 123.

To express it as a percentage, we divide by the original number and then multiply by 100:

`\displaystyle \mathrm{Change} \% = (123 )/( 612) * 100 \approx 0.2`

The percent change in enrollment at Main Middle School was about 20%