725.93% is the change from 81 to 669
Calculation steps:
[( 669 - 81 ) ÷ 81] x 100 = 725.93%
Formula
Percentage change = [(669 - 81) / 81] x 100
Subtract the new number by the original number
669 - 81 = 588
588 ÷ 81 = 7.2592592592592595
7.2592592592592595 x 100 = 725.93%