49.57% is the change from 115 to 172
Calculation steps:
[( 172 - 115 ) ÷ 115] x 100 = 49.57%
Formula
Percentage change = [(172 - 115) / 115] x 100
Subtract the new number by the original number
172 - 115 = 57
57 ÷ 115 = 0.4956521739130435
0.4956521739130435 x 100 = 49.57%