67.72% is the change from 285 to 478
Calculation steps:
[( 478 - 285 ) ÷ 285] x 100 = 67.72%
Formula
Percentage change = [(478 - 285) / 285] x 100
Subtract the new number by the original number
478 - 285 = 193
193 ÷ 285 = 0.6771929824561403
0.6771929824561403 x 100 = 67.72%