979.69% is the change from 64 to 691
Calculation steps:
[( 691 - 64 ) ÷ 64] x 100 = 979.69%
Formula
Percentage change = [(691 - 64) / 64] x 100
Subtract the new number by the original number
691 - 64 = 627
627 ÷ 64 = 9.796875
9.796875 x 100 = 979.69%