-78.82% is the change from 170 to 36
Calculation steps:
[( 36 - 170 ) ÷ 170] x 100 = -78.82%
Formula
Percentage change = [(36 - 170) / 170] x 100
Subtract the new number by the original number
36 - 170 = -134
-134 ÷ 170 = -0.788235294117647
-0.788235294117647 x 100 = -78.82%