143.14% is the change from 255 to 620
Calculation steps:
[( 620 - 255 ) ÷ 255] x 100 = 143.14%
Formula
Percentage change = [(620 - 255) / 255] x 100
Subtract the new number by the original number
620 - 255 = 365
365 ÷ 255 = 1.4313725490196079
1.4313725490196079 x 100 = 143.14%