-46.39% is the change from 817 to 438
Calculation steps:
[( 438 - 817 ) ÷ 817] x 100 = -46.39%
Formula
Percentage change = [(438 - 817) / 817] x 100
Subtract the new number by the original number
438 - 817 = -379
-379 ÷ 817 = -0.4638922888616891
-0.4638922888616891 x 100 = -46.39%