-51.27% is the change from 829 to 404
Calculation steps:
[( 404 - 829 ) ÷ 829] x 100 = -51.27%
Formula
Percentage change = [(404 - 829) / 829] x 100
Subtract the new number by the original number
404 - 829 = -425
-425 ÷ 829 = -0.5126658624849216
-0.5126658624849216 x 100 = -51.27%