6.56% is the change from 625 to 666
Calculation steps:
[( 666 - 625 ) ÷ 625] x 100 = 6.56%
Formula
Percentage change = [(666 - 625) / 625] x 100
Subtract the new number by the original number
666 - 625 = 41
41 ÷ 625 = 0.0656
0.0656 x 100 = 6.56%
Example