454.32% is the change from 81 to 449
Calculation steps:
[( 449 - 81 ) ÷ 81] x 100 = 454.32%
Formula
Percentage change = [(449 - 81) / 81] x 100
Subtract the new number by the original number
449 - 81 = 368
368 ÷ 81 = 4.54320987654321
4.54320987654321 x 100 = 454.32%