-30.52% is the change from 462 to 321
Calculation steps:
[( 321 - 462 ) ÷ 462] x 100 = -30.52%
Formula
Percentage change = [(321 - 462) / 462] x 100
Subtract the new number by the original number
321 - 462 = -141
-141 ÷ 462 = -0.3051948051948052
-0.3051948051948052 x 100 = -30.52%