52.63% is the change from 266 to 406
Calculation steps:
[( 406 - 266 ) ÷ 266] x 100 = 52.63%
Formula
Percentage change = [(406 - 266) / 266] x 100
Subtract the new number by the original number
406 - 266 = 140
140 ÷ 266 = 0.5263157894736842
0.5263157894736842 x 100 = 52.63%