-24.6% is the change from 821 to 619
Calculation steps:
[( 619 - 821 ) ÷ 821] x 100 = -24.6%
Formula
Percentage change = [(619 - 821) / 821] x 100
Subtract the new number by the original number
619 - 821 = -202
-202 ÷ 821 = -0.24604141291108406
-0.24604141291108406 x 100 = -24.6%