68.42% is the change from 285 to 480
Calculation steps:
[( 480 - 285 ) ÷ 285] x 100 = 68.42%
Formula
Percentage change = [(480 - 285) / 285] x 100
Subtract the new number by the original number
480 - 285 = 195
195 ÷ 285 = 0.6842105263157895
0.6842105263157895 x 100 = 68.42%