-25.82% is the change from 821 to 609
Calculation steps:
[( 609 - 821 ) ÷ 821] x 100 = -25.82%
Formula
Percentage change = [(609 - 821) / 821] x 100
Subtract the new number by the original number
609 - 821 = -212
-212 ÷ 821 = -0.2582216808769793
-0.2582216808769793 x 100 = -25.82%