On the first day of winter, an entire field of trees starts losing its flowers. The number of locusts remaining alive in this population decreases rapidly due to the lack of flowers for them to eat.

The relationship between the elapsed time, t, in days, since the beginning of winter, and the total number of locusts, N(t), is modeled by the following function:
N(t) = 8950 • (0.7)^2t

Complete the following sentence about the daily percent change of the locust population.
Round your answer to the nearest percent.

Every day, there is a % addition to/removal from
the locust population.