-29.32% is the change from 399 to 282
Calculation steps:
[( 282 - 399 ) ÷ 399] x 100 = -29.32%
Formula
Percentage change = [(282 - 399) / 399] x 100
Subtract the new number by the original number
282 - 399 = -117
-117 ÷ 399 = -0.2932330827067669
-0.2932330827067669 x 100 = -29.32%