99.3% is the change from 284 to 566
Calculation steps:
[( 566 - 284 ) ÷ 284] x 100 = 99.3%
Formula
Percentage change = [(566 - 284) / 284] x 100
Subtract the new number by the original number
566 - 284 = 282
282 ÷ 284 = 0.9929577464788732
0.9929577464788732 x 100 = 99.3%