453.09% is the change from 81 to 448
Calculation steps:
[( 448 - 81 ) ÷ 81] x 100 = 453.09%
Formula
Percentage change = [(448 - 81) / 81] x 100
Subtract the new number by the original number
448 - 81 = 367
367 ÷ 81 = 4.530864197530864
4.530864197530864 x 100 = 453.09%