-13.29% is the change from 286 to 248
Calculation steps:
[( 248 - 286 ) ÷ 286] x 100 = -13.29%
Formula
Percentage change = [(248 - 286) / 286] x 100
Subtract the new number by the original number
248 - 286 = -38
-38 ÷ 286 = -0.13286713286713286
-0.13286713286713286 x 100 = -13.29%