-40.75% is the change from 643 to 381
Calculation steps:
[( 381 - 643 ) ÷ 643] x 100 = -40.75%
Formula
Percentage change = [(381 - 643) / 643] x 100
Subtract the new number by the original number
381 - 643 = -262
-262 ÷ 643 = -0.40746500777604977
-0.40746500777604977 x 100 = -40.75%