72.41% is the change from 261 to 450
Calculation steps:
[( 450 - 261 ) ÷ 261] x 100 = 72.41%
Formula
Percentage change = [(450 - 261) / 261] x 100
Subtract the new number by the original number
450 - 261 = 189
189 ÷ 261 = 0.7241379310344828
0.7241379310344828 x 100 = 72.41%