511.2% is the change from 125 to 764
Calculation steps:
[( 764 - 125 ) ÷ 125] x 100 = 511.2%
Formula
Percentage change = [(764 - 125) / 125] x 100
Subtract the new number by the original number
764 - 125 = 639
639 ÷ 125 = 5.112
5.112 x 100 = 511.2%
Example