4.72% is the change from 657 to 688
Calculation steps:
[( 688 - 657 ) ÷ 657] x 100 = 4.72%
Formula
Percentage change = [(688 - 657) / 657] x 100
Subtract the new number by the original number
688 - 657 = 31
31 ÷ 657 = 0.0471841704718417
0.0471841704718417 x 100 = 4.72%