79.86% is the change from 283 to 509
Calculation steps:
[( 509 - 283 ) ÷ 283] x 100 = 79.86%
Formula
Percentage change = [(509 - 283) / 283] x 100
Subtract the new number by the original number
509 - 283 = 226
226 ÷ 283 = 0.7985865724381626
0.7985865724381626 x 100 = 79.86%