76.92% is the change from 286 to 506
Calculation steps:
[( 506 - 286 ) ÷ 286] x 100 = 76.92%
Formula
Percentage change = [(506 - 286) / 286] x 100
Subtract the new number by the original number
506 - 286 = 220
220 ÷ 286 = 0.7692307692307693
0.7692307692307693 x 100 = 76.92%