76.08% is the change from 255 to 449
Calculation steps:
[( 449 - 255 ) ÷ 255] x 100 = 76.08%
Formula
Percentage change = [(449 - 255) / 255] x 100
Subtract the new number by the original number
449 - 255 = 194
194 ÷ 255 = 0.7607843137254902
0.7607843137254902 x 100 = 76.08%