60.9% is the change from 266 to 428
Calculation steps:
[( 428 - 266 ) ÷ 266] x 100 = 60.9%
Formula
Percentage change = [(428 - 266) / 266] x 100
Subtract the new number by the original number
428 - 266 = 162
162 ÷ 266 = 0.6090225563909775
0.6090225563909775 x 100 = 60.9%