13.29% is the change from 286 to 324
Calculation steps:
[( 324 - 286 ) ÷ 286] x 100 = 13.29%
Formula
Percentage change = [(324 - 286) / 286] x 100
Subtract the new number by the original number
324 - 286 = 38
38 ÷ 286 = 0.13286713286713286
0.13286713286713286 x 100 = 13.29%