204.71% is the change from 255 to 777
Calculation steps:
[( 777 - 255 ) ÷ 255] x 100 = 204.71%
Formula
Percentage change = [(777 - 255) / 255] x 100
Subtract the new number by the original number
777 - 255 = 522
522 ÷ 255 = 2.0470588235294116
2.0470588235294116 x 100 = 204.71%