-55.2% is the change from 904 to 405
Calculation steps:
[( 405 - 904 ) ÷ 904] x 100 = -55.2%
Formula
Percentage change = [(405 - 904) / 904] x 100
Subtract the new number by the original number
405 - 904 = -499
-499 ÷ 904 = -0.5519911504424779
-0.5519911504424779 x 100 = -55.2%