-51.91% is the change from 497 to 239
Calculation steps:
[( 239 - 497 ) ÷ 497] x 100 = -51.91%
Formula
Percentage change = [(239 - 497) / 497] x 100
Subtract the new number by the original number
239 - 497 = -258
-258 ÷ 497 = -0.5191146881287726
-0.5191146881287726 x 100 = -51.91%