-55.75% is the change from 904 to 400
Calculation steps:
[( 400 - 904 ) ÷ 904] x 100 = -55.75%
Formula
Percentage change = [(400 - 904) / 904] x 100
Subtract the new number by the original number
400 - 904 = -504
-504 ÷ 904 = -0.5575221238938053
-0.5575221238938053 x 100 = -55.75%