859.6% is the change from 99 to 950
Calculation steps:
[( 950 - 99 ) ÷ 99] x 100 = 859.6%
Formula
Percentage change = [(950 - 99) / 99] x 100
Subtract the new number by the original number
950 - 99 = 851
851 ÷ 99 = 8.595959595959595
8.595959595959595 x 100 = 859.6%