-20.46% is the change from 821 to 653
Calculation steps:
[( 653 - 821 ) ÷ 821] x 100 = -20.46%
Formula
Percentage change = [(653 - 821) / 821] x 100
Subtract the new number by the original number
653 - 821 = -168
-168 ÷ 821 = -0.2046285018270402
-0.2046285018270402 x 100 = -20.46%