68.9% is the change from 283 to 478
Calculation steps:
[( 478 - 283 ) ÷ 283] x 100 = 68.9%
Formula
Percentage change = [(478 - 283) / 283] x 100
Subtract the new number by the original number
478 - 283 = 195
195 ÷ 283 = 0.6890459363957597
0.6890459363957597 x 100 = 68.9%