77.46% is the change from 284 to 504
Calculation steps:
[( 504 - 284 ) ÷ 284] x 100 = 77.46%
Formula
Percentage change = [(504 - 284) / 284] x 100
Subtract the new number by the original number
504 - 284 = 220
220 ÷ 284 = 0.7746478873239436
0.7746478873239436 x 100 = 77.46%