-57.25% is the change from 821 to 351
Calculation steps:
[( 351 - 821 ) ÷ 821] x 100 = -57.25%
Formula
Percentage change = [(351 - 821) / 821] x 100
Subtract the new number by the original number
351 - 821 = -470
-470 ÷ 821 = -0.5724725943970768
-0.5724725943970768 x 100 = -57.25%