-64.6% is the change from 904 to 320
Calculation steps:
[( 320 - 904 ) ÷ 904] x 100 = -64.6%
Formula
Percentage change = [(320 - 904) / 904] x 100
Subtract the new number by the original number
320 - 904 = -584
-584 ÷ 904 = -0.6460176991150443
-0.6460176991150443 x 100 = -64.6%