-72.4% is the change from 616 to 170
Calculation steps:
[( 170 - 616 ) ÷ 616] x 100 = -72.4%
Formula
Percentage change = [(170 - 616) / 616] x 100
Subtract the new number by the original number
170 - 616 = -446
-446 ÷ 616 = -0.724025974025974
-0.724025974025974 x 100 = -72.4%