-65.52% is the change from 493 to 170
Calculation steps:
[( 170 - 493 ) ÷ 493] x 100 = -65.52%
Formula
Percentage change = [(170 - 493) / 493] x 100
Subtract the new number by the original number
170 - 493 = -323
-323 ÷ 493 = -0.6551724137931034
-0.6551724137931034 x 100 = -65.52%