-97.79% is the change from 181 to 4
Calculation steps:
[( 4 - 181 ) ÷ 181] x 100 = -97.79%
Formula
Percentage change = [(4 - 181) / 181] x 100
Subtract the new number by the original number
4 - 181 = -177
-177 ÷ 181 = -0.9779005524861878
-0.9779005524861878 x 100 = -97.79%