-22.31% is the change from 520 to 404
Calculation steps:
[( 404 - 520 ) ÷ 520] x 100 = -22.31%
Formula
Percentage change = [(404 - 520) / 520] x 100
Subtract the new number by the original number
404 - 520 = -116
-116 ÷ 520 = -0.2230769230769231
-0.2230769230769231 x 100 = -22.31%