-3.53% is the change from 170 to 164
Calculation steps:
[( 164 - 170 ) ÷ 170] x 100 = -3.53%
Formula
Percentage change = [(164 - 170) / 170] x 100
Subtract the new number by the original number
164 - 170 = -6
-6 ÷ 170 = -0.03529411764705882
-0.03529411764705882 x 100 = -3.53%