-40.5% is the change from 642 to 382
Calculation steps:
[( 382 - 642 ) ÷ 642] x 100 = -40.5%
Formula
Percentage change = [(382 - 642) / 642] x 100
Subtract the new number by the original number
382 - 642 = -260
-260 ÷ 642 = -0.40498442367601245
-0.40498442367601245 x 100 = -40.5%