97.23% is the change from 325 to 641
Calculation steps:
[( 641 - 325 ) ÷ 325] x 100 = 97.23%
Formula
Percentage change = [(641 - 325) / 325] x 100
Subtract the new number by the original number
641 - 325 = 316
316 ÷ 325 = 0.9723076923076923
0.9723076923076923 x 100 = 97.23%