79.65% is the change from 285 to 512
Calculation steps:
[( 512 - 285 ) ÷ 285] x 100 = 79.65%
Formula
Percentage change = [(512 - 285) / 285] x 100
Subtract the new number by the original number
512 - 285 = 227
227 ÷ 285 = 0.7964912280701755
0.7964912280701755 x 100 = 79.65%