-52.55% is the change from 824 to 391
Calculation steps:
[( 391 - 824 ) ÷ 824] x 100 = -52.55%
Formula
Percentage change = [(391 - 824) / 824] x 100
Subtract the new number by the original number
391 - 824 = -433
-433 ÷ 824 = -0.5254854368932039
-0.5254854368932039 x 100 = -52.55%