-70.89% is the change from 821 to 239
Calculation steps:
[( 239 - 821 ) ÷ 821] x 100 = -70.89%
Formula
Percentage change = [(239 - 821) / 821] x 100
Subtract the new number by the original number
239 - 821 = -582
-582 ÷ 821 = -0.7088915956151035
-0.7088915956151035 x 100 = -70.89%