66.86% is the change from 172 to 287
Calculation steps:
[( 287 - 172 ) ÷ 172] x 100 = 66.86%
Formula
Percentage change = [(287 - 172) / 172] x 100
Subtract the new number by the original number
287 - 172 = 115
115 ÷ 172 = 0.6686046511627907
0.6686046511627907 x 100 = 66.86%