-65.26% is the change from 921 to 320
Calculation steps:
[( 320 - 921 ) ÷ 921] x 100 = -65.26%
Formula
Percentage change = [(320 - 921) / 921] x 100
Subtract the new number by the original number
320 - 921 = -601
-601 ÷ 921 = -0.6525515743756786
-0.6525515743756786 x 100 = -65.26%