68.63% is the change from 102 to 172
Calculation steps:
[( 172 - 102 ) ÷ 102] x 100 = 68.63%
Formula
Percentage change = [(172 - 102) / 102] x 100
Subtract the new number by the original number
172 - 102 = 70
70 ÷ 102 = 0.6862745098039216
0.6862745098039216 x 100 = 68.63%