-21.34% is the change from 239 to 188
Calculation steps:
[( 188 - 239 ) ÷ 239] x 100 = -21.34%
Formula
Percentage change = [(188 - 239) / 239] x 100
Subtract the new number by the original number
188 - 239 = -51
-51 ÷ 239 = -0.21338912133891214
-0.21338912133891214 x 100 = -21.34%