-72.45% is the change from 617 to 170
Calculation steps:
[( 170 - 617 ) ÷ 617] x 100 = -72.45%
Formula
Percentage change = [(170 - 617) / 617] x 100
Subtract the new number by the original number
170 - 617 = -447
-447 ÷ 617 = -0.7244732576985413
-0.7244732576985413 x 100 = -72.45%