657.5% is the change from 120 to 909
Calculation steps:
[( 909 - 120 ) ÷ 120] x 100 = 657.5%
Formula
Percentage change = [(909 - 120) / 120] x 100
Subtract the new number by the original number
909 - 120 = 789
789 ÷ 120 = 6.575
6.575 x 100 = 657.5%
Example