156.86% is the change from 255 to 655
Calculation steps:
[( 655 - 255 ) ÷ 255] x 100 = 156.86%
Formula
Percentage change = [(655 - 255) / 255] x 100
Subtract the new number by the original number
655 - 255 = 400
400 ÷ 255 = 1.5686274509803921
1.5686274509803921 x 100 = 156.86%