-85.19% is the change from 547 to 81
Calculation steps:
[( 81 - 547 ) ÷ 547] x 100 = -85.19%
Formula
Percentage change = [(81 - 547) / 547] x 100
Subtract the new number by the original number
81 - 547 = -466
-466 ÷ 547 = -0.8519195612431444
-0.8519195612431444 x 100 = -85.19%