-75.64% is the change from 858 to 209
Calculation steps:
[( 209 - 858 ) ÷ 858] x 100 = -75.64%
Formula
Percentage change = [(209 - 858) / 858] x 100
Subtract the new number by the original number
209 - 858 = -649
-649 ÷ 858 = -0.7564102564102564
-0.7564102564102564 x 100 = -75.64%