A sample of an unknown chemical element naturally loses its mass over time. The relationship between the elapsed time , in days, since the mass of the sample was initially measured, and its mass, M(t)M(t)M(t)M, left parenthesis, t, right parenthesis, in grams, is modeled by the following function:
M(t)=900⋅(827)t
Complete the following sentence about the rate of change of the sample. Round your answer to two decimal places.
The sample loses 13\dfrac{1}{3}31start fraction, 1, divided by, 3, end fraction of its mass every
days.

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