-73.77% is the change from 648 to 170
Calculation steps:
[( 170 - 648 ) ÷ 648] x 100 = -73.77%
Formula
Percentage change = [(170 - 648) / 648] x 100
Subtract the new number by the original number
170 - 648 = -478
-478 ÷ 648 = -0.7376543209876543
-0.7376543209876543 x 100 = -73.77%