-27.62% is the change from 858 to 621
Calculation steps:
[( 621 - 858 ) ÷ 858] x 100 = -27.62%
Formula
Percentage change = [(621 - 858) / 858] x 100
Subtract the new number by the original number
621 - 858 = -237
-237 ÷ 858 = -0.2762237762237762
-0.2762237762237762 x 100 = -27.62%