20.56% is the change from 287 to 346
Calculation steps:
[( 346 - 287 ) ÷ 287] x 100 = 20.56%
Formula
Percentage change = [(346 - 287) / 287] x 100
Subtract the new number by the original number
346 - 287 = 59
59 ÷ 287 = 0.20557491289198607
0.20557491289198607 x 100 = 20.56%