66.79% is the change from 274 to 457
Calculation steps:
[( 457 - 274 ) ÷ 274] x 100 = 66.79%
Formula
Percentage change = [(457 - 274) / 274] x 100
Subtract the new number by the original number
457 - 274 = 183
183 ÷ 274 = 0.6678832116788321
0.6678832116788321 x 100 = 66.79%