-37.65% is the change from 409 to 255
Calculation steps:
[( 255 - 409 ) ÷ 409] x 100 = -37.65%
Formula
Percentage change = [(255 - 409) / 409] x 100
Subtract the new number by the original number
255 - 409 = -154
-154 ÷ 409 = -0.3765281173594132
-0.3765281173594132 x 100 = -37.65%