-71.93% is the change from 855 to 240
Calculation steps:
[( 240 - 855 ) ÷ 855] x 100 = -71.93%
Formula
Percentage change = [(240 - 855) / 855] x 100
Subtract the new number by the original number
240 - 855 = -615
-615 ÷ 855 = -0.7192982456140351
-0.7192982456140351 x 100 = -71.93%