824.69% is the change from 81 to 749
Calculation steps:
[( 749 - 81 ) ÷ 81] x 100 = 824.69%
Formula
Percentage change = [(749 - 81) / 81] x 100
Subtract the new number by the original number
749 - 81 = 668
668 ÷ 81 = 8.246913580246913
8.246913580246913 x 100 = 824.69%