-62.11% is the change from 673 to 255
Calculation steps:
[( 255 - 673 ) ÷ 673] x 100 = -62.11%
Formula
Percentage change = [(255 - 673) / 673] x 100
Subtract the new number by the original number
255 - 673 = -418
-418 ÷ 673 = -0.6210995542347697
-0.6210995542347697 x 100 = -62.11%