983.95% is the change from 81 to 878
Calculation steps:
[( 878 - 81 ) ÷ 81] x 100 = 983.95%
Formula
Percentage change = [(878 - 81) / 81] x 100
Subtract the new number by the original number
878 - 81 = 797
797 ÷ 81 = 9.839506172839506
9.839506172839506 x 100 = 983.95%