745.68% is the change from 81 to 685
Calculation steps:
[( 685 - 81 ) ÷ 81] x 100 = 745.68%
Formula
Percentage change = [(685 - 81) / 81] x 100
Subtract the new number by the original number
685 - 81 = 604
604 ÷ 81 = 7.45679012345679
7.45679012345679 x 100 = 745.68%