700% is the change from 1 to 8
Calculation steps:
[( 8 - 1 ) ÷ 1] x 100 = 700%
Formula
Percentage change = [(8 - 1) / 1] x 100
Subtract the new number by the original number
8 - 1 = 7
7 ÷ 1 = 7
7 x 100 = 700%
Example