-54.08% is the change from 821 to 377
Calculation steps:
[( 377 - 821 ) ÷ 821] x 100 = -54.08%
Formula
Percentage change = [(377 - 821) / 821] x 100
Subtract the new number by the original number
377 - 821 = -444
-444 ÷ 821 = -0.5408038976857491
-0.5408038976857491 x 100 = -54.08%