-60.73% is the change from 820 to 322
Calculation steps:
[( 322 - 820 ) ÷ 820] x 100 = -60.73%
Formula
Percentage change = [(322 - 820) / 820] x 100
Subtract the new number by the original number
322 - 820 = -498
-498 ÷ 820 = -0.6073170731707317
-0.6073170731707317 x 100 = -60.73%