-13.6% is the change from 993 to 858
Calculation steps:
[( 858 - 993 ) ÷ 993] x 100 = -13.6%
Formula
Percentage change = [(858 - 993) / 993] x 100
Subtract the new number by the original number
858 - 993 = -135
-135 ÷ 993 = -0.13595166163141995
-0.13595166163141995 x 100 = -13.6%