-30.51% is the change from 885 to 615
Calculation steps:
[( 615 - 885 ) ÷ 885] x 100 = -30.51%
Formula
Percentage change = [(615 - 885) / 885] x 100
Subtract the new number by the original number
615 - 885 = -270
-270 ÷ 885 = -0.3050847457627119
-0.3050847457627119 x 100 = -30.51%