8040% is the change from 10 to 814
Calculation steps:
[( 814 - 10 ) ÷ 10] x 100 = 8040%
Formula
Percentage change = [(814 - 10) / 10] x 100
Subtract the new number by the original number
814 - 10 = 804
804 ÷ 10 = 80.4
80.4 x 100 = 8040%
Example