-53.54% is the change from 820 to 381
Calculation steps:
[( 381 - 820 ) ÷ 820] x 100 = -53.54%
Formula
Percentage change = [(381 - 820) / 820] x 100
Subtract the new number by the original number
381 - 820 = -439
-439 ÷ 820 = -0.5353658536585366
-0.5353658536585366 x 100 = -53.54%