-50.97% is the change from 824 to 404
Calculation steps:
[( 404 - 824 ) ÷ 824] x 100 = -50.97%
Formula
Percentage change = [(404 - 824) / 824] x 100
Subtract the new number by the original number
404 - 824 = -420
-420 ÷ 824 = -0.5097087378640777
-0.5097087378640777 x 100 = -50.97%