64.41% is the change from 399 to 656
Calculation steps:
[( 656 - 399 ) ÷ 399] x 100 = 64.41%
Formula
Percentage change = [(656 - 399) / 399] x 100
Subtract the new number by the original number
656 - 399 = 257
257 ÷ 399 = 0.6441102756892231
0.6441102756892231 x 100 = 64.41%