49.4% is the change from 168 to 251
Calculation steps:
[( 251 - 168 ) ÷ 168] x 100 = 49.4%
Formula
Percentage change = [(251 - 168) / 168] x 100
Subtract the new number by the original number
251 - 168 = 83
83 ÷ 168 = 0.49404761904761907
0.49404761904761907 x 100 = 49.4%