108.65% is the change from 266 to 555
Calculation steps:
[( 555 - 266 ) ÷ 266] x 100 = 108.65%
Formula
Percentage change = [(555 - 266) / 266] x 100
Subtract the new number by the original number
555 - 266 = 289
289 ÷ 266 = 1.086466165413534
1.086466165413534 x 100 = 108.65%