66.42% is the change from 274 to 456
Calculation steps:
[( 456 - 274 ) ÷ 274] x 100 = 66.42%
Formula
Percentage change = [(456 - 274) / 274] x 100
Subtract the new number by the original number
456 - 274 = 182
182 ÷ 274 = 0.6642335766423357
0.6642335766423357 x 100 = 66.42%