862.96% is the change from 81 to 780
Calculation steps:
[( 780 - 81 ) ÷ 81] x 100 = 862.96%
Formula
Percentage change = [(780 - 81) / 81] x 100
Subtract the new number by the original number
780 - 81 = 699
699 ÷ 81 = 8.62962962962963
8.62962962962963 x 100 = 862.96%