8.56% is the change from 666 to 723
Calculation steps:
[( 723 - 666 ) ÷ 666] x 100 = 8.56%
Formula
Percentage change = [(723 - 666) / 666] x 100
Subtract the new number by the original number
723 - 666 = 57
57 ÷ 666 = 0.08558558558558559
0.08558558558558559 x 100 = 8.56%
Example