69.82% is the change from 328 to 557
Calculation steps:
[( 557 - 328 ) ÷ 328] x 100 = 69.82%
Formula
Percentage change = [(557 - 328) / 328] x 100
Subtract the new number by the original number
557 - 328 = 229
229 ÷ 328 = 0.698170731707317
0.698170731707317 x 100 = 69.82%