80.99% is the change from 284 to 514
Calculation steps:
[( 514 - 284 ) ÷ 284] x 100 = 80.99%
Formula
Percentage change = [(514 - 284) / 284] x 100
Subtract the new number by the original number
514 - 284 = 230
230 ÷ 284 = 0.8098591549295775
0.8098591549295775 x 100 = 80.99%