83400% is the change from 1 to 835
Calculation steps:
[( 835 - 1 ) ÷ 1] x 100 = 83400%
Formula
Percentage change = [(835 - 1) / 1] x 100
Subtract the new number by the original number
835 - 1 = 834
834 ÷ 1 = 834
834 x 100 = 83400%
Example