63.04% is the change from 276 to 450
Calculation steps:
[( 450 - 276 ) ÷ 276] x 100 = 63.04%
Formula
Percentage change = [(450 - 276) / 276] x 100
Subtract the new number by the original number
450 - 276 = 174
174 ÷ 276 = 0.6304347826086957
0.6304347826086957 x 100 = 63.04%