-4.2% is the change from 286 to 274
Calculation steps:
[( 274 - 286 ) ÷ 286] x 100 = -4.2%
Formula
Percentage change = [(274 - 286) / 286] x 100
Subtract the new number by the original number
274 - 286 = -12
-12 ÷ 286 = -0.04195804195804196
-0.04195804195804196 x 100 = -4.2%