512.8% is the change from 125 to 766
Calculation steps:
[( 766 - 125 ) ÷ 125] x 100 = 512.8%
Formula
Percentage change = [(766 - 125) / 125] x 100
Subtract the new number by the original number
766 - 125 = 641
641 ÷ 125 = 5.128
5.128 x 100 = 512.8%
Example