684.81% is the change from 79 to 620
Calculation steps:
[( 620 - 79 ) ÷ 79] x 100 = 684.81%
Formula
Percentage change = [(620 - 79) / 79] x 100
Subtract the new number by the original number
620 - 79 = 541
541 ÷ 79 = 6.848101265822785
6.848101265822785 x 100 = 684.81%