-30.97% is the change from 465 to 321
Calculation steps:
[( 321 - 465 ) ÷ 465] x 100 = -30.97%
Formula
Percentage change = [(321 - 465) / 465] x 100
Subtract the new number by the original number
321 - 465 = -144
-144 ÷ 465 = -0.3096774193548387
-0.3096774193548387 x 100 = -30.97%