50.75% is the change from 266 to 401
Calculation steps:
[( 401 - 266 ) ÷ 266] x 100 = 50.75%
Formula
Percentage change = [(401 - 266) / 266] x 100
Subtract the new number by the original number
401 - 266 = 135
135 ÷ 266 = 0.5075187969924813
0.5075187969924813 x 100 = 50.75%