787.88% is the change from 99 to 879
Calculation steps:
[( 879 - 99 ) ÷ 99] x 100 = 787.88%
Formula
Percentage change = [(879 - 99) / 99] x 100
Subtract the new number by the original number
879 - 99 = 780
780 ÷ 99 = 7.878787878787879
7.878787878787879 x 100 = 787.88%