-50.31% is the change from 817 to 406
Calculation steps:
[( 406 - 817 ) ÷ 817] x 100 = -50.31%
Formula
Percentage change = [(406 - 817) / 817] x 100
Subtract the new number by the original number
406 - 817 = -411
-411 ÷ 817 = -0.5030599755201959
-0.5030599755201959 x 100 = -50.31%