-52.59% is the change from 270 to 128
Calculation steps:
[( 128 - 270 ) ÷ 270] x 100 = -52.59%
Formula
Percentage change = [(128 - 270) / 270] x 100
Subtract the new number by the original number
128 - 270 = -142
-142 ÷ 270 = -0.5259259259259259
-0.5259259259259259 x 100 = -52.59%