78.49% is the change from 251 to 448
Calculation steps:
[( 448 - 251 ) ÷ 251] x 100 = 78.49%
Formula
Percentage change = [(448 - 251) / 251] x 100
Subtract the new number by the original number
448 - 251 = 197
197 ÷ 251 = 0.7848605577689243
0.7848605577689243 x 100 = 78.49%