-84.16% is the change from 543 to 86
Calculation steps:
[( 86 - 543 ) ÷ 543] x 100 = -84.16%
Formula
Percentage change = [(86 - 543) / 543] x 100
Subtract the new number by the original number
86 - 543 = -457
-457 ÷ 543 = -0.8416206261510129
-0.8416206261510129 x 100 = -84.16%