-72.35% is the change from 170 to 47
Calculation steps:
[( 47 - 170 ) ÷ 170] x 100 = -72.35%
Formula
Percentage change = [(47 - 170) / 170] x 100
Subtract the new number by the original number
47 - 170 = -123
-123 ÷ 170 = -0.7235294117647059
-0.7235294117647059 x 100 = -72.35%