848.15% is the change from 81 to 768
Calculation steps:
[( 768 - 81 ) ÷ 81] x 100 = 848.15%
Formula
Percentage change = [(768 - 81) / 81] x 100
Subtract the new number by the original number
768 - 81 = 687
687 ÷ 81 = 8.481481481481481
8.481481481481481 x 100 = 848.15%