930.86% is the change from 81 to 835
Calculation steps:
[( 835 - 81 ) ÷ 81] x 100 = 930.86%
Formula
Percentage change = [(835 - 81) / 81] x 100
Subtract the new number by the original number
835 - 81 = 754
754 ÷ 81 = 9.308641975308642
9.308641975308642 x 100 = 930.86%