878.79% is the change from 99 to 969
Calculation steps:
[( 969 - 99 ) ÷ 99] x 100 = 878.79%
Formula
Percentage change = [(969 - 99) / 99] x 100
Subtract the new number by the original number
969 - 99 = 870
870 ÷ 99 = 8.787878787878787
8.787878787878787 x 100 = 878.79%