813.58% is the change from 81 to 740
Calculation steps:
[( 740 - 81 ) ÷ 81] x 100 = 813.58%
Formula
Percentage change = [(740 - 81) / 81] x 100
Subtract the new number by the original number
740 - 81 = 659
659 ÷ 81 = 8.135802469135802
8.135802469135802 x 100 = 813.58%