73.56% is the change from 450 to 781
Calculation steps:
[( 781 - 450 ) ÷ 450] x 100 = 73.56%
Formula
Percentage change = [(781 - 450) / 450] x 100
Subtract the new number by the original number
781 - 450 = 331
331 ÷ 450 = 0.7355555555555555
0.7355555555555555 x 100 = 73.56%