668.22% is the change from 129 to 991
Calculation steps:
[( 991 - 129 ) ÷ 129] x 100 = 668.22%
Formula
Percentage change = [(991 - 129) / 129] x 100
Subtract the new number by the original number
991 - 129 = 862
862 ÷ 129 = 6.682170542635659
6.682170542635659 x 100 = 668.22%