75.7% is the change from 284 to 499
Calculation steps:
[( 499 - 284 ) ÷ 284] x 100 = 75.7%
Formula
Percentage change = [(499 - 284) / 284] x 100
Subtract the new number by the original number
499 - 284 = 215
215 ÷ 284 = 0.7570422535211268
0.7570422535211268 x 100 = 75.7%