76.84% is the change from 285 to 504
Calculation steps:
[( 504 - 285 ) ÷ 285] x 100 = 76.84%
Formula
Percentage change = [(504 - 285) / 285] x 100
Subtract the new number by the original number
504 - 285 = 219
219 ÷ 285 = 0.7684210526315789
0.7684210526315789 x 100 = 76.84%