78.4% is the change from 287 to 512
Calculation steps:
[( 512 - 287 ) ÷ 287] x 100 = 78.4%
Formula
Percentage change = [(512 - 287) / 287] x 100
Subtract the new number by the original number
512 - 287 = 225
225 ÷ 287 = 0.7839721254355401
0.7839721254355401 x 100 = 78.4%