-40.06% is the change from 644 to 386
Calculation steps:
[( 386 - 644 ) ÷ 644] x 100 = -40.06%
Formula
Percentage change = [(386 - 644) / 644] x 100
Subtract the new number by the original number
386 - 644 = -258
-258 ÷ 644 = -0.40062111801242234
-0.40062111801242234 x 100 = -40.06%