-72.71% is the change from 623 to 170
Calculation steps:
[( 170 - 623 ) ÷ 623] x 100 = -72.71%
Formula
Percentage change = [(170 - 623) / 623] x 100
Subtract the new number by the original number
170 - 623 = -453
-453 ÷ 623 = -0.7271268057784912
-0.7271268057784912 x 100 = -72.71%
Example