644.96% is the change from 129 to 961
Calculation steps:
[( 961 - 129 ) ÷ 129] x 100 = 644.96%
Formula
Percentage change = [(961 - 129) / 129] x 100
Subtract the new number by the original number
961 - 129 = 832
832 ÷ 129 = 6.449612403100775
6.449612403100775 x 100 = 644.96%