-14.88% is the change from 336 to 286
Calculation steps:
[( 286 - 336 ) ÷ 336] x 100 = -14.88%
Formula
Percentage change = [(286 - 336) / 336] x 100
Subtract the new number by the original number
286 - 336 = -50
-50 ÷ 336 = -0.1488095238095238
-0.1488095238095238 x 100 = -14.88%