Given the following exponential function, identify whether the change represents growth or decay, and determine the percentage rate of increase or decrease per unit of xx, to the nearest tenth of a percent. y, equals, 1500, left bracket, 0, point, 6, 1, right bracket, start superscript, minus, start fraction, x, divided by, 6, end fraction, end superscript y=1500(0.61) − 6 x ​