-52.98% is the change from 823 to 387
Calculation steps:
[( 387 - 823 ) ÷ 823] x 100 = -52.98%
Formula
Percentage change = [(387 - 823) / 823] x 100
Subtract the new number by the original number
387 - 823 = -436
-436 ÷ 823 = -0.5297691373025516
-0.5297691373025516 x 100 = -52.98%