-65.48% is the change from 930 to 321
Calculation steps:
[( 321 - 930 ) ÷ 930] x 100 = -65.48%
Formula
Percentage change = [(321 - 930) / 930] x 100
Subtract the new number by the original number
321 - 930 = -609
-609 ÷ 930 = -0.6548387096774193
-0.6548387096774193 x 100 = -65.48%