-42.14% is the change from 821 to 475
Calculation steps:
[( 475 - 821 ) ÷ 821] x 100 = -42.14%
Formula
Percentage change = [(475 - 821) / 821] x 100
Subtract the new number by the original number
475 - 821 = -346
-346 ÷ 821 = -0.42143727161997563
-0.42143727161997563 x 100 = -42.14%