69.55% is the change from 266 to 451
Calculation steps:
[( 451 - 266 ) ÷ 266] x 100 = 69.55%
Formula
Percentage change = [(451 - 266) / 266] x 100
Subtract the new number by the original number
451 - 266 = 185
185 ÷ 266 = 0.6954887218045113
0.6954887218045113 x 100 = 69.55%