-85.03% is the change from 541 to 81
Calculation steps:
[( 81 - 541 ) ÷ 541] x 100 = -85.03%
Formula
Percentage change = [(81 - 541) / 541] x 100
Subtract the new number by the original number
81 - 541 = -460
-460 ÷ 541 = -0.8502772643253235
-0.8502772643253235 x 100 = -85.03%