-74.09% is the change from 656 to 170
Calculation steps:
[( 170 - 656 ) ÷ 656] x 100 = -74.09%
Formula
Percentage change = [(170 - 656) / 656] x 100
Subtract the new number by the original number
170 - 656 = -486
-486 ÷ 656 = -0.7408536585365854
-0.7408536585365854 x 100 = -74.09%