67.6% is the change from 392 to 657
Calculation steps:
[( 657 - 392 ) ÷ 392] x 100 = 67.6%
Formula
Percentage change = [(657 - 392) / 392] x 100
Subtract the new number by the original number
657 - 392 = 265
265 ÷ 392 = 0.6760204081632653
0.6760204081632653 x 100 = 67.6%