-20.43% is the change from 328 to 261
Calculation steps:
[( 261 - 328 ) ÷ 328] x 100 = -20.43%
Formula
Percentage change = [(261 - 328) / 328] x 100
Subtract the new number by the original number
261 - 328 = -67
-67 ÷ 328 = -0.20426829268292682
-0.20426829268292682 x 100 = -20.43%