-11.48% is the change from 270 to 239
Calculation steps:
[( 239 - 270 ) ÷ 270] x 100 = -11.48%
Formula
Percentage change = [(239 - 270) / 270] x 100
Subtract the new number by the original number
239 - 270 = -31
-31 ÷ 270 = -0.11481481481481481
-0.11481481481481481 x 100 = -11.48%