71.43% is the change from 266 to 456
Calculation steps:
[( 456 - 266 ) ÷ 266] x 100 = 71.43%
Formula
Percentage change = [(456 - 266) / 266] x 100
Subtract the new number by the original number
456 - 266 = 190
190 ÷ 266 = 0.7142857142857143
0.7142857142857143 x 100 = 71.43%