-8.81% is the change from 352 to 321
Calculation steps:
[( 321 - 352 ) ÷ 352] x 100 = -8.81%
Formula
Percentage change = [(321 - 352) / 352] x 100
Subtract the new number by the original number
321 - 352 = -31
-31 ÷ 352 = -0.08806818181818182
-0.08806818181818182 x 100 = -8.81%