49.27% is the change from 274 to 409
Calculation steps:
[( 409 - 274 ) ÷ 274] x 100 = 49.27%
Formula
Percentage change = [(409 - 274) / 274] x 100
Subtract the new number by the original number
409 - 274 = 135
135 ÷ 274 = 0.4927007299270073
0.4927007299270073 x 100 = 49.27%