64.12% is the change from 170 to 279
Calculation steps:
[( 279 - 170 ) ÷ 170] x 100 = 64.12%
Formula
Percentage change = [(279 - 170) / 170] x 100
Subtract the new number by the original number
279 - 170 = 109
109 ÷ 170 = 0.6411764705882353
0.6411764705882353 x 100 = 64.12%