66.75% is the change from 406 to 677
Calculation steps:
[( 677 - 406 ) ÷ 406] x 100 = 66.75%
Formula
Percentage change = [(677 - 406) / 406] x 100
Subtract the new number by the original number
677 - 406 = 271
271 ÷ 406 = 0.6674876847290641
0.6674876847290641 x 100 = 66.75%