-40.74% is the change from 270 to 160
Calculation steps:
[( 160 - 270 ) ÷ 270] x 100 = -40.74%
Formula
Percentage change = [(160 - 270) / 270] x 100
Subtract the new number by the original number
160 - 270 = -110
-110 ÷ 270 = -0.4074074074074074
-0.4074074074074074 x 100 = -40.74%