6.61% is the change from 666 to 710
Calculation steps:
[( 710 - 666 ) ÷ 666] x 100 = 6.61%
Formula
Percentage change = [(710 - 666) / 666] x 100
Subtract the new number by the original number
710 - 666 = 44
44 ÷ 666 = 0.06606606606606606
0.06606606606606606 x 100 = 6.61%