-16.08% is the change from 286 to 240
Calculation steps:
[( 240 - 286 ) ÷ 286] x 100 = -16.08%
Formula
Percentage change = [(240 - 286) / 286] x 100
Subtract the new number by the original number
240 - 286 = -46
-46 ÷ 286 = -0.16083916083916083
-0.16083916083916083 x 100 = -16.08%