54.74% is the change from 274 to 424
Calculation steps:
[( 424 - 274 ) ÷ 274] x 100 = 54.74%
Formula
Percentage change = [(424 - 274) / 274] x 100
Subtract the new number by the original number
424 - 274 = 150
150 ÷ 274 = 0.5474452554744526
0.5474452554744526 x 100 = 54.74%