-81.52% is the change from 541 to 100
Calculation steps:
[( 100 - 541 ) ÷ 541] x 100 = -81.52%
Formula
Percentage change = [(100 - 541) / 541] x 100
Subtract the new number by the original number
100 - 541 = -441
-441 ÷ 541 = -0.8151571164510166
-0.8151571164510166 x 100 = -81.52%