937.5% is the change from 64 to 664
Calculation steps:
[( 664 - 64 ) ÷ 64] x 100 = 937.5%
Formula
Percentage change = [(664 - 64) / 64] x 100
Subtract the new number by the original number
664 - 64 = 600
600 ÷ 64 = 9.375
9.375 x 100 = 937.5%
Example