-50.36% is the change from 824 to 409
Calculation steps:
[( 409 - 824 ) ÷ 824] x 100 = -50.36%
Formula
Percentage change = [(409 - 824) / 824] x 100
Subtract the new number by the original number
409 - 824 = -415
-415 ÷ 824 = -0.5036407766990292
-0.5036407766990292 x 100 = -50.36%