-90.06% is the change from 181 to 18
Calculation steps:
[( 18 - 181 ) ÷ 181] x 100 = -90.06%
Formula
Percentage change = [(18 - 181) / 181] x 100
Subtract the new number by the original number
18 - 181 = -163
-163 ÷ 181 = -0.9005524861878453
-0.9005524861878453 x 100 = -90.06%