710% is the change from 10 to 81
Calculation steps:
[( 81 - 10 ) ÷ 10] x 100 = 710%
Formula
Percentage change = [(81 - 10) / 10] x 100
Subtract the new number by the original number
81 - 10 = 71
71 ÷ 10 = 7.1
7.1 x 100 = 710%
Example