45.62% is the change from 274 to 399
Calculation steps:
[( 399 - 274 ) ÷ 274] x 100 = 45.62%
Formula
Percentage change = [(399 - 274) / 274] x 100
Subtract the new number by the original number
399 - 274 = 125
125 ÷ 274 = 0.4562043795620438
0.4562043795620438 x 100 = 45.62%