-73.41% is the change from 959 to 255
Calculation steps:
[( 255 - 959 ) ÷ 959] x 100 = -73.41%
Formula
Percentage change = [(255 - 959) / 959] x 100
Subtract the new number by the original number
255 - 959 = -704
-704 ÷ 959 = -0.7340980187695516
-0.7340980187695516 x 100 = -73.41%