898.44% is the change from 64 to 639
Calculation steps:
[( 639 - 64 ) ÷ 64] x 100 = 898.44%
Formula
Percentage change = [(639 - 64) / 64] x 100
Subtract the new number by the original number
639 - 64 = 575
575 ÷ 64 = 8.984375
8.984375 x 100 = 898.44%