904.69% is the change from 64 to 643
Calculation steps:
[( 643 - 64 ) ÷ 64] x 100 = 904.69%
Formula
Percentage change = [(643 - 64) / 64] x 100
Subtract the new number by the original number
643 - 64 = 579
579 ÷ 64 = 9.046875
9.046875 x 100 = 904.69%