78.44% is the change from 450 to 803
Calculation steps:
[( 803 - 450 ) ÷ 450] x 100 = 78.44%
Formula
Percentage change = [(803 - 450) / 450] x 100
Subtract the new number by the original number
803 - 450 = 353
353 ÷ 450 = 0.7844444444444445
0.7844444444444445 x 100 = 78.44%