998.75% is the change from 80 to 879
Calculation steps:
[( 879 - 80 ) ÷ 80] x 100 = 998.75%
Formula
Percentage change = [(879 - 80) / 80] x 100
Subtract the new number by the original number
879 - 80 = 799
799 ÷ 80 = 9.9875
9.9875 x 100 = 998.75%
Example