-73.79% is the change from 973 to 255
Calculation steps:
[( 255 - 973 ) ÷ 973] x 100 = -73.79%
Formula
Percentage change = [(255 - 973) / 973] x 100
Subtract the new number by the original number
255 - 973 = -718
-718 ÷ 973 = -0.7379239465570401
-0.7379239465570401 x 100 = -73.79%