-1.81% is the change from 331 to 325
Calculation steps:
[( 325 - 331 ) ÷ 331] x 100 = -1.81%
Formula
Percentage change = [(325 - 331) / 331] x 100
Subtract the new number by the original number
325 - 331 = -6
-6 ÷ 331 = -0.01812688821752266
-0.01812688821752266 x 100 = -1.81%