The chemical element einsteinium-253 naturally loses its mass over timeA sample of einsteinium-253 had an initial mass of grams when we measured it The relationship between the elapsed time tin days, and the mass, M(t) . in grams, left in the sample is modeled by the following function M(t)=320*( t/61.4 0.125) Complete the following sentence about the rate of change in the mass of the sample. The sample loses 87.5% of its mass every days