-85.94% is the change from 128 to 18
Calculation steps:
[( 18 - 128 ) ÷ 128] x 100 = -85.94%
Formula
Percentage change = [(18 - 128) / 128] x 100
Subtract the new number by the original number
18 - 128 = -110
-110 ÷ 128 = -0.859375
-0.859375 x 100 = -85.94%