-69.41% is the change from 170 to 52
Calculation steps:
[( 52 - 170 ) ÷ 170] x 100 = -69.41%
Formula
Percentage change = [(52 - 170) / 170] x 100
Subtract the new number by the original number
52 - 170 = -118
-118 ÷ 170 = -0.6941176470588235
-0.6941176470588235 x 100 = -69.41%