-15.15% is the change from 858 to 728
Calculation steps:
[( 728 - 858 ) ÷ 858] x 100 = -15.15%
Formula
Percentage change = [(728 - 858) / 858] x 100
Subtract the new number by the original number
728 - 858 = -130
-130 ÷ 858 = -0.15151515151515152
-0.15151515151515152 x 100 = -15.15%