45.93% is the change from 172 to 251
Calculation steps:
[( 251 - 172 ) ÷ 172] x 100 = 45.93%
Formula
Percentage change = [(251 - 172) / 172] x 100
Subtract the new number by the original number
251 - 172 = 79
79 ÷ 172 = 0.45930232558139533
0.45930232558139533 x 100 = 45.93%