67.06% is the change from 170 to 284
Calculation steps:
[( 284 - 170 ) ÷ 170] x 100 = 67.06%
Formula
Percentage change = [(284 - 170) / 170] x 100
Subtract the new number by the original number
284 - 170 = 114
114 ÷ 170 = 0.6705882352941176
0.6705882352941176 x 100 = 67.06%