Question

Since the sanctuary was established, the estimated population of American robins in the area has increased from 86 to 102. Describe the percent change in the estimated population of American robins. Round to the nearest whole percent. Enter your answer in the box to complete the sentence. The percent change is about a % increase.

Answer 1

24%

To find % of change, divide the higher number by the smaller number.

Good luck :)

Answer 2

The percentage change is 18.6%.

Explanation:

Givens

The population increase is from 86 to 102.

We notice that the increase is

102 - 86 = 16.

So, we can get the answer using the rule of three.

If 86 represents 100%, then which percentage would represents 102?

`102 * (100 \%)/(86) \approx 118.6 \%`

The percentage increase would be

118.6% - 100% = 18.6%

Therefore, the percentage change is 18.6%.