520.97% is the change from 124 to 770
Calculation steps:
[( 770 - 124 ) ÷ 124] x 100 = 520.97%
Formula
Percentage change = [(770 - 124) / 124] x 100
Subtract the new number by the original number
770 - 124 = 646
646 ÷ 124 = 5.209677419354839
5.209677419354839 x 100 = 520.97%