-74.65% is the change from 647 to 164
Calculation steps:
[( 164 - 647 ) ÷ 647] x 100 = -74.65%
Formula
Percentage change = [(164 - 647) / 647] x 100
Subtract the new number by the original number
164 - 647 = -483
-483 ÷ 647 = -0.7465224111282844
-0.7465224111282844 x 100 = -74.65%