42.16% is the change from 287 to 408
Calculation steps:
[( 408 - 287 ) ÷ 287] x 100 = 42.16%
Formula
Percentage change = [(408 - 287) / 287] x 100
Subtract the new number by the original number
408 - 287 = 121
121 ÷ 287 = 0.42160278745644597
0.42160278745644597 x 100 = 42.16%