-4.78% is the change from 858 to 817
Calculation steps:
[( 817 - 858 ) ÷ 858] x 100 = -4.78%
Formula
Percentage change = [(817 - 858) / 858] x 100
Subtract the new number by the original number
817 - 858 = -41
-41 ÷ 858 = -0.047785547785547784
-0.047785547785547784 x 100 = -4.78%