78.52% is the change from 284 to 507
Calculation steps:
[( 507 - 284 ) ÷ 284] x 100 = 78.52%
Formula
Percentage change = [(507 - 284) / 284] x 100
Subtract the new number by the original number
507 - 284 = 223
223 ÷ 284 = 0.7852112676056338
0.7852112676056338 x 100 = 78.52%