-52.86% is the change from 823 to 388
Calculation steps:
[( 388 - 823 ) ÷ 823] x 100 = -52.86%
Formula
Percentage change = [(388 - 823) / 823] x 100
Subtract the new number by the original number
388 - 823 = -435
-435 ÷ 823 = -0.528554070473876
-0.528554070473876 x 100 = -52.86%