685.71% is the change from 7 to 55
Calculation steps:
[( 55 - 7 ) ÷ 7] x 100 = 685.71%
Formula
Percentage change = [(55 - 7) / 7] x 100
Subtract the new number by the original number
55 - 7 = 48
48 ÷ 7 = 6.857142857142857
6.857142857142857 x 100 = 685.71%