600% is the change from 7 to 49
Calculation steps:
[( 49 - 7 ) ÷ 7] x 100 = 600%
Formula
Percentage change = [(49 - 7) / 7] x 100
Subtract the new number by the original number
49 - 7 = 42
42 ÷ 7 = 6
6 x 100 = 600%
Example