677.27% is the change from 66 to 513
Calculation steps:
[( 513 - 66 ) ÷ 66] x 100 = 677.27%
Formula
Percentage change = [(513 - 66) / 66] x 100
Subtract the new number by the original number
513 - 66 = 447
447 ÷ 66 = 6.7727272727272725
6.7727272727272725 x 100 = 677.27%