-73.58% is the change from 636 to 168
Calculation steps:
[( 168 - 636 ) ÷ 636] x 100 = -73.58%
Formula
Percentage change = [(168 - 636) / 636] x 100
Subtract the new number by the original number
168 - 636 = -468
-468 ÷ 636 = -0.7358490566037735
-0.7358490566037735 x 100 = -73.58%