-78.09% is the change from 858 to 188
Calculation steps:
[( 188 - 858 ) ÷ 858] x 100 = -78.09%
Formula
Percentage change = [(188 - 858) / 858] x 100
Subtract the new number by the original number
188 - 858 = -670
-670 ÷ 858 = -0.7808857808857809
-0.7808857808857809 x 100 = -78.09%