-18.61% is the change from 403 to 328
Calculation steps:
[( 328 - 403 ) ÷ 403] x 100 = -18.61%
Formula
Percentage change = [(328 - 403) / 403] x 100
Subtract the new number by the original number
328 - 403 = -75
-75 ÷ 403 = -0.18610421836228289
-0.18610421836228289 x 100 = -18.61%