-3.31% is the change from 332 to 321
Calculation steps:
[( 321 - 332 ) ÷ 332] x 100 = -3.31%
Formula
Percentage change = [(321 - 332) / 332] x 100
Subtract the new number by the original number
321 - 332 = -11
-11 ÷ 332 = -0.03313253012048193
-0.03313253012048193 x 100 = -3.31%