-51.52% is the change from 495 to 240
Calculation steps:
[( 240 - 495 ) ÷ 495] x 100 = -51.52%
Formula
Percentage change = [(240 - 495) / 495] x 100
Subtract the new number by the original number
240 - 495 = -255
-255 ÷ 495 = -0.5151515151515151
-0.5151515151515151 x 100 = -51.52%