-57.32% is the change from 239 to 102
Calculation steps:
[( 102 - 239 ) ÷ 239] x 100 = -57.32%
Formula
Percentage change = [(102 - 239) / 239] x 100
Subtract the new number by the original number
102 - 239 = -137
-137 ÷ 239 = -0.5732217573221757
-0.5732217573221757 x 100 = -57.32%