-50.77% is the change from 652 to 321
Calculation steps:
[( 321 - 652 ) ÷ 652] x 100 = -50.77%
Formula
Percentage change = [(321 - 652) / 652] x 100
Subtract the new number by the original number
321 - 652 = -331
-331 ÷ 652 = -0.5076687116564417
-0.5076687116564417 x 100 = -50.77%