35.46% is the change from 251 to 340
Calculation steps:
[( 340 - 251 ) ÷ 251] x 100 = 35.46%
Formula
Percentage change = [(340 - 251) / 251] x 100
Subtract the new number by the original number
340 - 251 = 89
89 ÷ 251 = 0.3545816733067729
0.3545816733067729 x 100 = 35.46%