516.44% is the change from 73 to 450
Calculation steps:
[( 450 - 73 ) ÷ 73] x 100 = 516.44%
Formula
Percentage change = [(450 - 73) / 73] x 100
Subtract the new number by the original number
450 - 73 = 377
377 ÷ 73 = 5.164383561643835
5.164383561643835 x 100 = 516.44%