676.56% is the change from 64 to 497
Calculation steps:
[( 497 - 64 ) ÷ 64] x 100 = 676.56%
Formula
Percentage change = [(497 - 64) / 64] x 100
Subtract the new number by the original number
497 - 64 = 433
433 ÷ 64 = 6.765625
6.765625 x 100 = 676.56%