1.7% is the change from 646 to 657
Calculation steps:
[( 657 - 646 ) ÷ 646] x 100 = 1.7%
Formula
Percentage change = [(657 - 646) / 646] x 100
Subtract the new number by the original number
657 - 646 = 11
11 ÷ 646 = 0.017027863777089782
0.017027863777089782 x 100 = 1.7%