45.09% is the change from 173 to 251
Calculation steps:
[( 251 - 173 ) ÷ 173] x 100 = 45.09%
Formula
Percentage change = [(251 - 173) / 173] x 100
Subtract the new number by the original number
251 - 173 = 78
78 ÷ 173 = 0.4508670520231214
0.4508670520231214 x 100 = 45.09%