-46.27% is the change from 817 to 439
Calculation steps:
[( 439 - 817 ) ÷ 817] x 100 = -46.27%
Formula
Percentage change = [(439 - 817) / 817] x 100
Subtract the new number by the original number
439 - 817 = -378
-378 ÷ 817 = -0.46266829865361075
-0.46266829865361075 x 100 = -46.27%