20.63% is the change from 286 to 345
Calculation steps:
[( 345 - 286 ) ÷ 286] x 100 = 20.63%
Formula
Percentage change = [(345 - 286) / 286] x 100
Subtract the new number by the original number
345 - 286 = 59
59 ÷ 286 = 0.2062937062937063
0.2062937062937063 x 100 = 20.63%