-68.69% is the change from 495 to 155
Calculation steps:
[( 155 - 495 ) ÷ 495] x 100 = -68.69%
Formula
Percentage change = [(155 - 495) / 495] x 100
Subtract the new number by the original number
155 - 495 = -340
-340 ÷ 495 = -0.6868686868686869
-0.6868686868686869 x 100 = -68.69%