64.59% is the change from 401 to 660
Calculation steps:
[( 660 - 401 ) ÷ 401] x 100 = 64.59%
Formula
Percentage change = [(660 - 401) / 401] x 100
Subtract the new number by the original number
660 - 401 = 259
259 ÷ 401 = 0.6458852867830424
0.6458852867830424 x 100 = 64.59%