-39.03% is the change from 538 to 328
Calculation steps:
[( 328 - 538 ) ÷ 538] x 100 = -39.03%
Formula
Percentage change = [(328 - 538) / 538] x 100
Subtract the new number by the original number
328 - 538 = -210
-210 ÷ 538 = -0.3903345724907063
-0.3903345724907063 x 100 = -39.03%