81.03% is the change from 174 to 315
Calculation steps:
[( 315 - 174 ) ÷ 174] x 100 = 81.03%
Formula
Percentage change = [(315 - 174) / 174] x 100
Subtract the new number by the original number
315 - 174 = 141
141 ÷ 174 = 0.8103448275862069
0.8103448275862069 x 100 = 81.03%