64.25% is the change from 400 to 657
Calculation steps:
[( 657 - 400 ) ÷ 400] x 100 = 64.25%
Formula
Percentage change = [(657 - 400) / 400] x 100
Subtract the new number by the original number
657 - 400 = 257
257 ÷ 400 = 0.6425
0.6425 x 100 = 64.25%