12.94% is the change from 286 to 323
Calculation steps:
[( 323 - 286 ) ÷ 286] x 100 = 12.94%
Formula
Percentage change = [(323 - 286) / 286] x 100
Subtract the new number by the original number
323 - 286 = 37
37 ÷ 286 = 0.12937062937062938
0.12937062937062938 x 100 = 12.94%