87.65% is the change from 251 to 471
Calculation steps:
[( 471 - 251 ) ÷ 251] x 100 = 87.65%
Formula
Percentage change = [(471 - 251) / 251] x 100
Subtract the new number by the original number
471 - 251 = 220
220 ÷ 251 = 0.8764940239043825
0.8764940239043825 x 100 = 87.65%