740.74% is the change from 81 to 681
Calculation steps:
[( 681 - 81 ) ÷ 81] x 100 = 740.74%
Formula
Percentage change = [(681 - 81) / 81] x 100
Subtract the new number by the original number
681 - 81 = 600
600 ÷ 81 = 7.407407407407407
7.407407407407407 x 100 = 740.74%