64.76% is the change from 403 to 664
Calculation steps:
[( 664 - 403 ) ÷ 403] x 100 = 64.76%
Formula
Percentage change = [(664 - 403) / 403] x 100
Subtract the new number by the original number
664 - 403 = 261
261 ÷ 403 = 0.6476426799007444
0.6476426799007444 x 100 = 64.76%