404.69% is the change from 64 to 323
Calculation steps:
[( 323 - 64 ) ÷ 64] x 100 = 404.69%
Formula
Percentage change = [(323 - 64) / 64] x 100
Subtract the new number by the original number
323 - 64 = 259
259 ÷ 64 = 4.046875
4.046875 x 100 = 404.69%