-69.32% is the change from 541 to 166
Calculation steps:
[( 166 - 541 ) ÷ 541] x 100 = -69.32%
Formula
Percentage change = [(166 - 541) / 541] x 100
Subtract the new number by the original number
166 - 541 = -375
-375 ÷ 541 = -0.6931608133086876
-0.6931608133086876 x 100 = -69.32%