910.94% is the change from 64 to 647
Calculation steps:
[( 647 - 64 ) ÷ 64] x 100 = 910.94%
Formula
Percentage change = [(647 - 64) / 64] x 100
Subtract the new number by the original number
647 - 64 = 583
583 ÷ 64 = 9.109375
9.109375 x 100 = 910.94%