-88.75% is the change from 160 to 18
Calculation steps:
[( 18 - 160 ) ÷ 160] x 100 = -88.75%
Formula
Percentage change = [(18 - 160) / 160] x 100
Subtract the new number by the original number
18 - 160 = -142
-142 ÷ 160 = -0.8875
-0.8875 x 100 = -88.75%