-24.73% is the change from 821 to 618
Calculation steps:
[( 618 - 821 ) ÷ 821] x 100 = -24.73%
Formula
Percentage change = [(618 - 821) / 821] x 100
Subtract the new number by the original number
618 - 821 = -203
-203 ÷ 821 = -0.24725943970767356
-0.24725943970767356 x 100 = -24.73%