69.17% is the change from 266 to 450
Calculation steps:
[( 450 - 266 ) ÷ 266] x 100 = 69.17%
Formula
Percentage change = [(450 - 266) / 266] x 100
Subtract the new number by the original number
450 - 266 = 184
184 ÷ 266 = 0.6917293233082706
0.6917293233082706 x 100 = 69.17%