666% is the change from 100 to 766
Calculation steps:
[( 766 - 100 ) ÷ 100] x 100 = 666%
Formula
Percentage change = [(766 - 100) / 100] x 100
Subtract the new number by the original number
766 - 100 = 666
666 ÷ 100 = 6.66
6.66 x 100 = 666%
Example