-47.41% is the change from 270 to 142
Calculation steps:
[( 142 - 270 ) ÷ 270] x 100 = -47.41%
Formula
Percentage change = [(142 - 270) / 270] x 100
Subtract the new number by the original number
142 - 270 = -128
-128 ÷ 270 = -0.4740740740740741
-0.4740740740740741 x 100 = -47.41%