-50.55% is the change from 817 to 404
Calculation steps:
[( 404 - 817 ) ÷ 817] x 100 = -50.55%
Formula
Percentage change = [(404 - 817) / 817] x 100
Subtract the new number by the original number
404 - 817 = -413
-413 ÷ 817 = -0.5055079559363526
-0.5055079559363526 x 100 = -50.55%