-28.24% is the change from 170 to 122
Calculation steps:
[( 122 - 170 ) ÷ 170] x 100 = -28.24%
Formula
Percentage change = [(122 - 170) / 170] x 100
Subtract the new number by the original number
122 - 170 = -48
-48 ÷ 170 = -0.2823529411764706
-0.2823529411764706 x 100 = -28.24%