84.15% is the change from 284 to 523
Calculation steps:
[( 523 - 284 ) ÷ 284] x 100 = 84.15%
Formula
Percentage change = [(523 - 284) / 284] x 100
Subtract the new number by the original number
523 - 284 = 239
239 ÷ 284 = 0.8415492957746479
0.8415492957746479 x 100 = 84.15%