7.78% is the change from 450 to 485
Calculation steps:
[( 485 - 450 ) ÷ 450] x 100 = 7.78%
Formula
Percentage change = [(485 - 450) / 450] x 100
Subtract the new number by the original number
485 - 450 = 35
35 ÷ 450 = 0.07777777777777778
0.07777777777777778 x 100 = 7.78%