6.5% is the change from 523 to 557
Calculation steps:
[( 557 - 523 ) ÷ 523] x 100 = 6.5%
Formula
Percentage change = [(557 - 523) / 523] x 100
Subtract the new number by the original number
557 - 523 = 34
34 ÷ 523 = 0.06500956022944551
0.06500956022944551 x 100 = 6.5%