34.74% is the change from 285 to 384
Calculation steps:
[( 384 - 285 ) ÷ 285] x 100 = 34.74%
Formula
Percentage change = [(384 - 285) / 285] x 100
Subtract the new number by the original number
384 - 285 = 99
99 ÷ 285 = 0.3473684210526316
0.3473684210526316 x 100 = 34.74%