-43.64% is the change from 275 to 155
Calculation steps:
[( 155 - 275 ) ÷ 275] x 100 = -43.64%
Formula
Percentage change = [(155 - 275) / 275] x 100
Subtract the new number by the original number
155 - 275 = -120
-120 ÷ 275 = -0.43636363636363634
-0.43636363636363634 x 100 = -43.64%