-71.55% is the change from 840 to 239
Calculation steps:
[( 239 - 840 ) ÷ 840] x 100 = -71.55%
Formula
Percentage change = [(239 - 840) / 840] x 100
Subtract the new number by the original number
239 - 840 = -601
-601 ÷ 840 = -0.7154761904761905
-0.7154761904761905 x 100 = -71.55%