-88.96% is the change from 163 to 18
Calculation steps:
[( 18 - 163 ) ÷ 163] x 100 = -88.96%
Formula
Percentage change = [(18 - 163) / 163] x 100
Subtract the new number by the original number
18 - 163 = -145
-145 ÷ 163 = -0.8895705521472392
-0.8895705521472392 x 100 = -88.96%