61.75% is the change from 251 to 406
Calculation steps:
[( 406 - 251 ) ÷ 251] x 100 = 61.75%
Formula
Percentage change = [(406 - 251) / 251] x 100
Subtract the new number by the original number
406 - 251 = 155
155 ÷ 251 = 0.6175298804780877
0.6175298804780877 x 100 = 61.75%