-40.47% is the change from 645 to 384
Calculation steps:
[( 384 - 645 ) ÷ 645] x 100 = -40.47%
Formula
Percentage change = [(384 - 645) / 645] x 100
Subtract the new number by the original number
384 - 645 = -261
-261 ÷ 645 = -0.4046511627906977
-0.4046511627906977 x 100 = -40.47%