63.55% is the change from 406 to 664
Calculation steps:
[( 664 - 406 ) ÷ 406] x 100 = 63.55%
Formula
Percentage change = [(664 - 406) / 406] x 100
Subtract the new number by the original number
664 - 406 = 258
258 ÷ 406 = 0.6354679802955665
0.6354679802955665 x 100 = 63.55%