-74.03% is the change from 647 to 168
Calculation steps:
[( 168 - 647 ) ÷ 647] x 100 = -74.03%
Formula
Percentage change = [(168 - 647) / 647] x 100
Subtract the new number by the original number
168 - 647 = -479
-479 ÷ 647 = -0.740340030911901
-0.740340030911901 x 100 = -74.03%