63.64% is the change from 275 to 450
Calculation steps:
[( 450 - 275 ) ÷ 275] x 100 = 63.64%
Formula
Percentage change = [(450 - 275) / 275] x 100
Subtract the new number by the original number
450 - 275 = 175
175 ÷ 275 = 0.6363636363636364
0.6363636363636364 x 100 = 63.64%