73.68% is the change from 171 to 297
Calculation steps:
[( 297 - 171 ) ÷ 171] x 100 = 73.68%
Formula
Percentage change = [(297 - 171) / 171] x 100
Subtract the new number by the original number
297 - 171 = 126
126 ÷ 171 = 0.7368421052631579
0.7368421052631579 x 100 = 73.68%