-52.91% is the change from 824 to 388
Calculation steps:
[( 388 - 824 ) ÷ 824] x 100 = -52.91%
Formula
Percentage change = [(388 - 824) / 824] x 100
Subtract the new number by the original number
388 - 824 = -436
-436 ÷ 824 = -0.529126213592233
-0.529126213592233 x 100 = -52.91%