545.68% is the change from 81 to 523
Calculation steps:
[( 523 - 81 ) ÷ 81] x 100 = 545.68%
Formula
Percentage change = [(523 - 81) / 81] x 100
Subtract the new number by the original number
523 - 81 = 442
442 ÷ 81 = 5.45679012345679
5.45679012345679 x 100 = 545.68%