81.82% is the change from 286 to 520
Calculation steps:
[( 520 - 286 ) ÷ 286] x 100 = 81.82%
Formula
Percentage change = [(520 - 286) / 286] x 100
Subtract the new number by the original number
520 - 286 = 234
234 ÷ 286 = 0.8181818181818182
0.8181818181818182 x 100 = 81.82%