-60.66% is the change from 821 to 323
Calculation steps:
[( 323 - 821 ) ÷ 821] x 100 = -60.66%
Formula
Percentage change = [(323 - 821) / 821] x 100
Subtract the new number by the original number
323 - 821 = -498
-498 ÷ 821 = -0.6065773447015834
-0.6065773447015834 x 100 = -60.66%