-27.74% is the change from 328 to 237
Calculation steps:
[( 237 - 328 ) ÷ 328] x 100 = -27.74%
Formula
Percentage change = [(237 - 328) / 328] x 100
Subtract the new number by the original number
237 - 328 = -91
-91 ÷ 328 = -0.2774390243902439
-0.2774390243902439 x 100 = -27.74%