81700% is the change from 1 to 818
Calculation steps:
[( 818 - 1 ) ÷ 1] x 100 = 81700%
Formula
Percentage change = [(818 - 1) / 1] x 100
Subtract the new number by the original number
818 - 1 = 817
817 ÷ 1 = 817
817 x 100 = 81700%
Example