-29.88% is the change from 405 to 284
Calculation steps:
[( 284 - 405 ) ÷ 405] x 100 = -29.88%
Formula
Percentage change = [(284 - 405) / 405] x 100
Subtract the new number by the original number
284 - 405 = -121
-121 ÷ 405 = -0.29876543209876544
-0.29876543209876544 x 100 = -29.88%