-89.02% is the change from 164 to 18
Calculation steps:
[( 18 - 164 ) ÷ 164] x 100 = -89.02%
Formula
Percentage change = [(18 - 164) / 164] x 100
Subtract the new number by the original number
18 - 164 = -146
-146 ÷ 164 = -0.8902439024390244
-0.8902439024390244 x 100 = -89.02%