-73.77% is the change from 972 to 255
Calculation steps:
[( 255 - 972 ) ÷ 972] x 100 = -73.77%
Formula
Percentage change = [(255 - 972) / 972] x 100
Subtract the new number by the original number
255 - 972 = -717
-717 ÷ 972 = -0.7376543209876543
-0.7376543209876543 x 100 = -73.77%