7.73% is the change from 660 to 711
Calculation steps:
[( 711 - 660 ) ÷ 660] x 100 = 7.73%
Formula
Percentage change = [(711 - 660) / 660] x 100
Subtract the new number by the original number
711 - 660 = 51
51 ÷ 660 = 0.07727272727272727
0.07727272727272727 x 100 = 7.73%