-53.35% is the change from 821 to 383
Calculation steps:
[( 383 - 821 ) ÷ 821] x 100 = -53.35%
Formula
Percentage change = [(383 - 821) / 821] x 100
Subtract the new number by the original number
383 - 821 = -438
-438 ÷ 821 = -0.5334957369062119
-0.5334957369062119 x 100 = -53.35%